Mother acts like she only has 2 grandchildren

My mom was never a mother to me and when I turned 18 we barely spoke for years until I got married. When I got pregnant I decided to try to repair our relationship. I had twins and she was my babysitter for the first year and a half and she of course grew close to my twins. Well now I have a 2 year old and just had a baby 4 weeks ago. Problem is she doesn't acknowledge the smaller two. A few months ago she decided to have an episode (she's bi-polar and it's untreated) and go off on my husband and me. I decided I was going to stay away from her and she wouldn't be able to see the kids. I gave in because the twins were sad. When I gave birth to my newborn, she decided to come to the hospital and go off on my husband and me AGAIN. While she was cussing us out, she said she didn't give a F about the younger two and she only cared about the older twins. This was the final straw. I haven't spoken to her in 4 weeks. She just text me and asked to see the girls (twins.) It pisses me off because we don't play that favortism crap and she doesn't ask about my other two children. If you don't care about all of them then you can't see any of them. I don't want my kids to get older and feel like they're not loved by their grandparents. I haven't text back because A) I'm still pissed and B) I want to tell her that she needs to ask to see all of my kids or don't ask at all. I kind of wish she would just get out of my life overall. via /r/Parenting https://ift.tt/2xqTOZ3