She has been putting on weight for several years and I'd say is probably well over 13 stone, maybe 14 stone now (she is tall though). She eats rubbish most of the time and as she is almost 18, tends to cook for herself and spend a lot of time out with friends.
To give an example of what she's eating, she's just come in from town with a friend and has brought garlic bread, pizza, spring rolls and goujons to cook for lunch.....
I was overweight as a young teenager, but was lucky enough to lose the weight age 16 and managed to stay at what I suppose is a 'normal' weight ever since. She has said how it makes her miserable being overweight, but she doesnt seem minded (or perhaps able) to do something about it.
She'll be off to Uni soon, and I worry for her that her current eating habits will continue and the weight gain carry on 
She did go to the GP who said to put food on smaller plates and find a form of exercise she enjoyed. Any advice anyone?