If she never finds out is it a bad thing ?

My sister is 10 I’m 16 you know the deal lol this ain’t spam I’m just a super h**** kid and I live where it’s mostly white girls and white girls ain’t cute lol
But I cumed in my sisters p****
I was so h**** before she went to sleep I gave her like 10 melatonin gummy‘s lol and she was out after that I just pulled her pants down and jacked off when I was about to nut I put my tip up to her hole and shot my kids up her after that I felt guilty and fingered them out lol clean her up and went about my night now I can’t stop thinking about it what should I do