Evil mother in laws

Help! Does anyone else have a problem with their mother inlaws? She more than oversteps her boundaries and has since I've gotten pregnant. I just had my baby girl two weeks ago and she consistently calls my child her baby her baby and I've allowed her over twice bc I can't deal with her and each time she walks straight up to me grabs my daughter right out of my hands saying let me see my baby or hand her over? I feel she is rude and disrespectful. Am I just being an over protective mama bear or how should I address this to make it stop?