My Sister Rachel Update

My Sister Rachel and I started a sexual relationship last year and she got pregnant. Rachel come to live with me and my daughter Maggie after losing her job. I was divorced nd my ex wife Sarah didn't want Maggie and I got her without a fuss. Maggie loves her new mommy Rachel and her new little brother David born in July. My ex wife's parents are deceased, shortly after they both passed in a car accident, Sarah inherited everything as a only child and wanted a divorce and went overseas. In the 3 years since the divorce she hasn't tried to contact Maggie or me. Rachel is as far I'm concerned Maggie mother now. Our parents are happy with new grandchild, Rachel wants four children and has the support of Maggie, so I'm out numbered.