Most understanding mother in law ever

The other day i had to travel to go to meetings which involved me flying half way across the country for what was basically a waste of time but that's not the point.
the town we live in doesn't have an airport so i had to drive almost two hours to the city and stayed the night at my wife's moms house. She is actually, When i think about it the perfect mother in law. She goes to church when she can, Is very friendly, Always willing to take the kids at the drop of a hat so my wife and i can do stuff, She doesn't meddle in our affairs and is just over all nice.
I flew out in the morning and had planned on being back 2 day later mid afternoon and she was going to pick me up but had an opportunity to change my flight and took a "Red eye" home then a cab to her place, Let myself in and snuck off to bed but I left her a note on the table letting her know i didn't need to be picked up.
In the morning i woke up when she went for a shower since the spare room shares a wall with the bathroom, I didn't think anything of it and laid in bed trying to go back to sleep, the sun was up but i had the blackout shades closed and was planning on sleeping in before driving home. When she turned off the shower and opened the bathroom door i opened my eyes and she walked right past my door in her housecoat with her hair up in a towel, I was going to get up and let her know i was there but as I drug my self out of bed and stepped up to the door i looked across the hall and she had left her door wide open and HOLY!!!! Just as i looked across she dropped her housecoat and tossed it on the bed.
I was...Pleasantly surprised, She is 55, A single widow for 20 years and i have always thought she maintained herself well, She is in decent shape but always wears loose fitting clothes and never reveals more than an inch of cleavage or more than leg to the knee but i can honestly say she has a nice body. She was facing with her back to the door and she has a nice and firm looking ** that is round and jiggles just right as she walks. I got an eyeful a she bent at the waist and used the towel to dry her hair, She obviously shaves between her legs and bikini line but doesn't shave the rest since she has a fairly thick, Fairly large triangle above her lips and as she dried her hair i could see that she has puffy, pink ** lips with just a little bit of pink inner lips sticking out when she bends over and a bit of hair around her ** hole which is to be expected.
After she finished drying her hair she tossed her towel on the stool of her makeup table then scooped up her housecoat and walked toward the hall. I leaned back behind the door and she went into the bathroom where i couldn't see her but i watched her ** jiggle as she went by, A few seconds later she returned but i was hiding behind the door so i didn't see anything. my wife follows a ritual that she says she got from her mom and has always said if she can have skin half as nice as her moms when she is her age it will all be worth it and i got to see where she gets that ritual from.
My wife's mom stood in front of her dresser and grabbed a big bottle of lotion and for a few minutes i stared as she ran her hands over her entire upper body unfortunately she was facing away from me but she still did her stomach, Arms, Sides, Neck, shoulders, and then did her ** working lotion into it as i watched it jiggle as she spread her cheeks and got right close to her ** hole with her fingers then she spread her towel on the stool, Sat on it and did her legs and that's when i got to see her **. Average size (Probably about a 34C Same as my wife) but decent shape, Hanging just a bit with dark pink, almost brown, Bumpy areolae and pretty big, Hard **.
When she was done her legs she spread her thighs and worked lotion into her inner thighs for a minute and then wiped her hands on her legs then rubbed them together working in the excess lotion, She then reached up as she looked down and pinched both of her **, If i wasn't rock hard before i instantly was at that point and she pinched them a couple times, Took a deep breath and let out a little sigh.
She got up and put some stuff away and wandered back and forth to the bathroom in the buff and i was able to position my self where i figured i couldn't be seen but had the best vantage point possible and got a peek at her ** lips which look nice from the front with her hair starting just above her slit, She had not been to the kitchen yet and i watched as she wandered back to her room then she stopped and checked her watch then put her stool close to the wall and sat on it leaning back against the wall, She was facing the door and was only about 13-14 feet away.
I could see everything as she positioned herself and leaned back against the wall and then i almost came when she spread her legs looking down at her **, She started with one hand and spread her lips then licked the fingers of the other hand and reached down rubbing her self. I couldn't believe i was seeing this but she tilted her head from side to side as she obviously started getting more and more into it, She was rubbing and ** herself with one hand as she played with her ** with the other then she started getting really worked up and licked the fingers on the hand she had playing with her ** and leaned to one side, reached around under her leg, Put one foot up on the stool and leaned against the dresser.
Yeah, Yeah whatever...I am a pig, a perv, an **, whatever. I am not proud of it but i was kneeling by the door since it was the best place to not be seen but also the best view of her, I had it in my hand stroking it and when she buried her one ** in her as deep as she could and used one ** on the other hand to rub her ** hole it was more than i could take, I had a towel on the floor from my shower the night before and it is a good thing it was a big bath towel, I blew the biggest load i have ever had as i watched her start to shake and moan, I could see the muscles in her forearm flexing quickly as she worked her ** inside her ** and rubbed her ** hole with the other.
She scrunched up her face and i watched her ** jiggle as she shook, she clenched her thighs together and put her ** hand on top of her other hand trying to shove it even deeper, She twitched and shook as i blew a second load staring at her ** wiggling. I have never heard her curse before but she was moaning curse words quite loudly as she twitched hunched forward then took a couple deep breaths and leaned back spreading her legs and pulling her ** out, She gave her ** a few more slow, soft rubs then used her towel and wiped off her hands and **, she went to the bathroom and i heard the sink run, Probably washing her hands then she came back and still breathing heavy did a few stretches then pulled on her **, She walked back past and i got to see her ** jiggle while she walked one last time but then she turned toward the kitchen.
I realized she was going to see my note and that would be the end of everything so i quickly put my towel away closed my door so it was just open a crack, Just as i slipped back into bed i heard her say "**" and she ran past my door, I heard her door close and a few minutes later she opened it again, She walked up to my door and opened it.
I still wasn't sure how i wanted this to play out but i knew it was obvious there was no way i would have slept through her rubbing one out and even after blowing two loads i was still rock hard so when she opened the door i was laying there with just the sheet over me with a very obvious ** holding my phone, She opened the door and put her head down, She turned on the light and said "Hi, You're here" then she looked at the bulge under the sheet and said "Annnd you were awake", She put her ** tips on her forehead and cleared her throat then looked at me and said "Why don't you...umm...and then meet me in the kitchen" and pointed at my ** then turned and left closing the door.
I waited long enough to make her think i did then went to the kitchen, she was sitting at the table red faced holding a cup of coffee as i poured one and sat down, She started by apologizing and making sure i knew that she didn't know i was there to which i told her there was no need but then i felt my face light on fire when she said "Did you watch?" and with as red as i must have been she just nodded her head and said "yeah, Of course", I started to apologize and she told me it was fully understandable and she told me she was not at all upset with me for watching, we agreed to pretend it never happened and to never speak of it to anyone and had a few cups of coffee before i left and went home.
Best part of the whole thing is she told me to ** off before coming to the kitchen because she was understanding enough to realize i was going to anyway and had absolutely no problem with it.