Is NOBODY wrong in the post ? POST : So my EXMIL used to make my husband food for his lunches and send them home with at the end of each weekend when we would go over to do laundry. They are from Romania and she has 2 sons, one of which is my ex husband. She told him it was because she knew I didn’t know how to cook and wanted to make sure I wasn’t feeding him crappy American food that was what was making him so fat. Just to be clear, I have a bachelor’s degree in nutrition sciences and know how to cook but he always said that I should just ask his mother how to cook for him and make small dishes to see how they came out, but that she doesn’t mind cooking for him (I never received food from her). One of the many reasons we are divorced. 
Now, my ex and I have split custody over our 5 year old daughter and he has bringing back food, mostly snacks or goodies she has baked back with my daughter. When I asked my daughter about it, she said (EXMIL)  just wanted to make sure she had food that she made that she knew she liked. That is a cut to my ego and is a bit undermining to me as my daughter’s mother. (Side note, this woman has always considered my daughter to be the daughter she never had and told me that she was going to take the baby in the middle of the night so that I could get sleep while she had the baby in her bed.) She had a seriously twisted sense of grandmother boundaries of anyone I knew. So next time my ex husband comes to drop of my daughter, would I be the asshole if i tell him to take the food back because I don’t need it because I know what my daughter likes to eat and I don’t need food from his house?