I get along fine with my Mum-in-Law, she is a nice person and knows that her son and I love each other. It's funny, because just after Christmas I was using buying mittens at the store where she works (different department, and she wasn't working that day) and in chatting with the saleswoman who "rang me up" I mentioned that my Mum-in-law worked there, and she said "Ooooh, I like that. That just sounds so much nicer than mother-in-law for some reason."