Sponsored post- Should I let my mother die? Kindly advise me

Hey guys sorry for not posting recently, had technology difficulty. With that been said one of the readers sent in a story of her and wants some reasonable advise. So please kindly leave meaningful and comments. And oh she wants to remain anonymous. So the story goes thus;

I was born into a family of four but am the first born and i have a baby sister. While growing up I was privileged to enjoy everything that any adolesent should enjoy. I was born into a rich family, father a contractor and mum is a business woman. I stay at home alone alot with the nanny. When I was at age 4 I was sexually assulted by our gateman
because my nanny hardly stays at home with me when my parents are not home. I was too young to realise what the man was doing to me but all i can say is that he assulted me sexually like 20 times and everytime this happens I always feel a sharp pain between my thighs and have difficulty in walking. I tried talking to one of my uncle but I got shunned because he thinks am just being dramatic and that am just looking for an excuse for my parents to stay at home with me.

When I was about to be 9 my father died because he had a very tragic accident at work. He left a reasonable property for us but still my mum was not around to take care of us. I took responsibility for my sister but when I was 12 I was raped by one man  in our neighborhood we call him Olatunji. This happened because my sister has rheumatism and on that night she had crisis so i decided to go to my uncle's house to tell him what was happening. Since I and my sister were the only one at home and I was still young. On my way there these boys saw me running and they came to me questioning me why I was running. I told Uncle Olatunji what happened to my sister and he said he will call my uncle on phone for me and that he will follow me back to take care of my sister. Hearing this, I was extremely happy but my happiness was shortened when we got to my house and he raped me right in front of my sister. The pain I was suffered was too extreme and to make matter worse I saw my sister f8our house. When my mum told me this and that I should stop lying against Uncle Tunji,  I was shocked beyond imagining because have never come across a wicked soul like Uncle Tunji.  My mum eventually aborted the baby for me. When I was 18 I moved out of the house. My mum was indifferent about this movement and didn't care about where I went to P robabaly because I stole like 10 necklace of her each worth like #500,000. I then moved in with my father's best friend who was God sent to me because him and his wife took care of me like am one of their children. I have finished my studies and I didn't even hear a word from my mother because I was sent to school abroad.
Now what I need advise on is that when I got back home a year ago I was told my mum is sick and that she needs urgent kidney transplant. And my mum told me I should please give her on of mine since our kidney is compartible. I told my dad's friend and he said I should do whatever my heart tells me to do and my fiance said I shouldn't even try it and if I do that's the end of our relationship. My question now is what do you guys think I should do?