J.B.
I was pretty overweight at that age too. At around 11 I started getting more aware of myself and took the weight off. I never felt pushed by my mom or anything but I think what she did was she told me that diet soda tasted sweet but had not calories so I decided that I would drink diet. Now a lot of people don't even do soda, but if you guys do, maybe she can switch to diet for the occasional soda. Also, my mom had no cookies, candy, cakes, ice-cream,etc. in the house. If we wanted a treat she took us out to frozen yogurt or for a small cone at mc'donalds. Those are lower calorie options and I liked it just fine. You can do things like make jello sometimes as well, again sweet with minimal calories. I think to this day a major reason I kept my weight off for most of my life is because I had a habit of not having that kind of stuff in the house. Now that I had a baby, it is another story!!lol So anyway, I think by just steering her in the right direction with how to have a few sweet treats and not making it a big thing, you might really help her learn how to eat healthy all on her own. Hang in there!:)