Your right Sophie to be concerned for this child, we have to take care of them, because sometimes their teachers, babysitters, helpers are all they have. I would just suggest keeping an eye on her and if you see this behavior continue, maybe have a small chat with her and find out why she likes these foods and if she's hungry. It could break out a whole new can of worms. Maybe she doesn't eat well at home, maybe she's using food to hide other problems. OR MAYBE she's just fine and going through a phase, either way observation is the key to child behavior, which I'm sure you know already. Just keep an eye out and talk to her. I have a feeling she will have no problem warming up a nicely to you as your as sweet as they come!! Good luck!! And GOOD MORNING!!! have a great day!
Kim