Unsupportive mother

Hi all this is baby number 5 for me and the last. I have three from my previous marriage who are all a lot older 17 13 and 9. With my husband I have a little one he is 14 months we decided to have one more so this little one basically wouldn’t grow up alone. I plan on tying tubes after this one. Well I finally got the balls go tell my mother yesterday because she has always been unsupportive of pregnancies. I am an only child and she raised me alone. I am a professional we take good care of the children they are my world. She retired last year and takes care of my little one 3 days a week which i pay her for. Well I told her yesterday and she was pissed unsupportive stated she would not be helping out once this baby is born and she will not watch the new baby which I never asked her too and that she will also stop taking care of the one she currently watches. I’m a little hurt by all of this. Anyone else here with unsupportive parents.