We take turns with her medication and food. She will eat for my sister but not for me. She tells me her teeth hurt, gets upset and pushes food away. I took her to the dentist and was told there is no problem. My sister can get her to eat. Why is this? I spend more time with her and am the one to bring dinner for her. My sister does breakfast and dinner on occassion. It upsets me that she won't eat for me. Is this common? I'm very calm with her and try little tricks to get her to eat. My sister just puts the food down and she eats it.