My Mother Miriam update

I started a sexual relationship with my mother Miriam and have continued to regularly fuck her since. She sleeps with me every night except when my Daughter Casey is visiting, Miriam met and made friends with Anna 28 a shy girl who works at the local supermarket. Miriam thought Anna would be a perfect match for me and wanted us to get together, but Anna is so shy and being and only child and both parents now deceased, doesn't date or mix with other people other than at her work. Miriam is also a quiet person but is also determined when she sets her mind to something. As Anna is so shy and reluctant to date or much at all. Miriam started visiting her and got Anna into bed with her and after a month of the sexual relationship asked Anna to move in with us. Anna wasn't sure, but stayed over at our house one weekend and Miriam got her to sleep with us both and I took Anna's virginity. Just over a week later Miriam had convinced Anna to move in with us and share our bed. Anna isn't willing to sleep with me alone still and prefers Miriam in bed with her and me. Anna has gotten pregnant and we're marrying next month, Casey likes Anna a lot also and is happy to be having a little brother as the test show the baby is a boy. Casey is to be the flower girl at the wedding and is very excited about it also.