the ever annoying saying ......

Dealing with a grandma  that thinks she can talk to me any way she wants & isn't even my kin. She's an in law. She treats me however she wants with my husband not around, takes my own kid outside & her daughter follows like a puppy if I go outside then it's like I'm not welcomed & I'm looked at a certain way. She thinks when my husbands around she can act like we get along so well & that she follows my rules & respects me when the other 50% of the time she doesn't. My husband handles it when he sees it but when he's not home doesn't feel there is much he can do. I don't know what to do about it anymore cause she's one to blow out the situation & always turn it around on me. Plus we live with them so any suggestions? Anyone else deal with stuff like this?