Scared I will Never Get a White Woman Pregnant

I actually knew her through her little sister,whom I had known for a number of years. They both had graduated from a university, and the little sister secured a job as a lecturer at a college. She had no reasonable boyfriend but somehow badly wanted my baby. I was reluctantly considering giving her one but wasn't so sure yet,she was only 26. So I traveled there in 2014,visited her ,but chickened out and used a condom the whole time we had **. In less than a year after that encounter,the little sister died in some tragic car accident. Although I knew of the older sister(the mother of my son) ,I had never met her before. It was while talking on the phone, many times during the funeral arrangement and thereafter, that the plan to give her a baby came up. She actually proposed it indirectly. I told her on the phone that I was with my sons one day. She asked me to say hi to them and tell them "I will give them a girl." I was shocked but replied I would tell them. I thought about her statement a lot for long and at some point asked her what she meant.She could not elaborate, or was evasive. That is when it dawned on me, that since the younger sister's death robbed us the chance to have a baby,I will make that dream come true by giving this older sister one. They were very close, have similar teeth and smiles,and even kiss alike,lol. I believe the older sister learned all about my plans with her sister by reading extensive Whatsapp chats after her sister died(she denies that) and must have decided to have my baby long before I had asked her. I have not made love to her since the pregnancy-we live two continents apart.