How do you deal with the overbearing "mother in law"? I've already talked to baby daddy. We aren't sure.

She is really my exes mother. We were 2gether & living 2gether in anticipation of our daughter, but recenltly broke up due to a very unhealthy relationship. He is 2 immature & causes 2 much stress. I told him I was giving the baby my last name, & he told his mother. I was fine with his parents, but then she came over and asked about it angrily. I told her he had done nothing 2 b regarded higher than me. Then she began 2 ask when her visitation would start...I told her that she was welcome to visti whenever she wanted and I would bring the baby by, she wanted to know when she could take the baby to her house. I said I planned on feeding and her response was "Can't you pump?" When I told her I didn't feel comfortable allowing my children away for longer than 1 or 2 hours 4 the first 6-8 mo & no overnights until 1 yr, she was very "moody." She said she plans on being in the babies life and isn't going anywhere. She wants to b my baby daddy I think. What can I do?