She is currently 14 years old and about 220 lbs. She has been constantly becoming more overweight since she was about 3 years old (at which time she was completely a normal weight) She has gained about 9 lbs every year, consistantly . My parents have tried to encourage her to take off the weight ( and before it was just to stop gaining so quickly). They have tried everything from having her walk the dog, trying to monitor what she eats, walking on the treadmill whilst she watches television, having her join a youth football (soccer) teams when she was very young, and more recently having her join a youth basketball team. These did nothing but embarrass her, because she would be picked on for being heavy set. She has had numerous blood tests done to see if she has a thyroid problem, but the only issue she has is anemia (low iron).
A few weeks ago she started dating a boy she has liked for about a year now. In this time she has dropped 9 lbs. She has always had lofty goals ( like getting down to 110 lbs, like all the other middle school girls around her). I am concerned for her, that she might be losing for the wrong reasons or possibly too quickly.
what are your thoughts/ has anyone gone through similar circumstances? If so, what motivated you to lose?

, they live much more in the present and won't be truly motivated by health concerns due to obesity that might catch up with them in middle age. If health concerns are not at issue right now then they don't really really matter until it becomes a problem (in a child's mindset). If her motivation is losing weight for a boy, well, that probably isn't good motivation, but so long as she eats healthily (exercise or not) and doesn't descend into an eating disorder as a result, I wouldn't get overly worried. 
