Hello, how are you? my girl also eats a lot. She likes eating but she is fond of some sports, like table-tennis. If your girl likes sports, it seems healthy although she is a bit fatter than others.
Sometimes, my girl likes watching T.V. but I will stop her if she watches frequently. She likes cycling too so I always encourage her to ride her bicycle in the podium in our building.
I think that doing exercises can help to reduce fat, Am I right?