My ex sister-in-law won’t brush my daughter’s teeth when she looks after her

I have been separated from my ex for about nine months and our divorce just finalized. He has been having our four-year-old daughter from 1 to 3 days and nights per week, when she is with me the rest of the time.About three months ago, I found out that when my daughter doesn’t have school, he leaves her with my ex sister-in-law, her aunt. on those days, he leaves for work for my daughter wakes up.I asked this aunt very politely whether she had been brushing my daughter’s teeth in the morning, and she informed me that this was “not her job” because she’s not the mother. I told my ex that I couldn’t let my daughter stay with her anymore because she refuses to brush my daughter’s teeth. He agreed to make alternate arrangements.Anyway he has had her for the last three days and yesterday I found out that she has been with this aunt again every day in the morning despite our agreement. Again I’ve begged her to brush my daughter’s teeth and again she refused. I told him that I couldn’t let her stay with someone who refuses to brush her teeth and he said that it wasn’t a big deal and that she was going to stay with her, and there was nothing I could do about it.Now he refuses to even talk to me about it. I get child support from him but he doesn’t have to pay any of her medical or dental bills, I do. She has very sensitive teeth and already had to have her two top front once removed because she was playing too roughly and knocked them.I don’t want to limit my daughter’s time with her father. The custody agreement that we made had him taking her for one day a week but his work schedule has changed and now he can have her more days and I don’t want to deny him or my daughter access to each other. I told him that I wanted to come to a resolution to this so that I didn’t have to, and he said “ let’s just see where all your threats end up.) “translated)What do I do? She is still too little to make sure she brushes them by herself. Is it worth for her to not see her dad much, or to (sometimes) be in a place where the adult taking care of her thanks her only job is to make sure she doesn’t get injured? via /r/Parenting https://ift.tt/2FNZgfN