My niece role plays as my mother

My niece Susie is staying with me for awhile. She’s 74 now but when we were teenagers I asked her if I could see the hair on her pussy. she did;t let me see but I managed to sneak around and see her naked a few times.
I want to tell her about my sexual attraction to my mother who is my nieces granny. I’m curious how she will react, aside from shock, I imagine she might be interested in discussing the issue with me..
I would tell Susie that it started when I was 18 and my mother had a habit of exposing herself to me. Susie, your granny lifted her blouse and took off her bra right in front of me. She sat down in front off me and spread her legs so that I could see she wan’t wearing panties so I could stare at her very hairy pussy
Maybe Susie would want to role play as my mother. Her body now is so much like my mom was back then.
I think this conversation would allow me to almost realize my fantasy of making love to my mother.