Grandmother doesn’t follow rules ..

So my husband had told his mother that I didn’t want her leaving my daughter with hers because 1)she’s not good with kids at all 2) she threatened to call cps on my husband and I 3) she told me I would never be part of her family and she will never be part of hers ... so when my husband told her not to be leaving my daughter she left my daughter and told me that she was at the house and that yes my husband her son told her not to leave my daughter home with hers I’m beyond livid and when I walked in the house my daughters diaper was soaking wet and she now has a rash they put up baby gear I told them I didn’t want for my baby and gave me a whatcha gonna do about it look as soon as I walked through the door what should I do? I’m so close to permanently not letting my daughter call her and her daughter grandma and aunt they will be called by there first names and I am not letting her watch my daughter anymore . Am I over exaggerating or not?