I have a 7 year old daughter that was mine from a previous relationship and my husband has a 11 year old daughter from his first marriage.. every time his daughter comes over to our house shes fine for a while but now that my daughter calls him dad she seems to have a attitude, i can here his daughter picking on my daughter telling her to do things she knows she is not spose to do, and when i mention it to my husband we have a fight. I am at ends with it and his daughter told me just because your with my dad doesn't mean i have to call you mom which i never asked her to do so, i need help with this