I got my mother pregnant update

I got my mother Jane pregnant and she had my sister/daughter Amanda in July and last year I again got Jane pregnant and she had our son Brian after her late father. We have moved interstate and live as man and wife. Elaine 62 Jane's mother has moved in with us and looks after Amanda and Brian when we are at work. Elaine has joined in our lovemaking several times and I'm also fuck her regularly while Jane is at work.