Karen, I'm so glad to see your post concerning your daughter. I have been looking for teens who have or want to get banded. I have a daughter who is also 17-1/2 and overweight. She appears to have the same BMI as your daughter, but is 5'10". She has been to weight loss camp for 6 summers which didn't help in the long run (but she had a great time!).
She has her first appt with the local lap band clinic in two weeks and she is quite hopeful that this procedure will finally give her the true help she needs for long term success. She is a beautiful girl with a fabulous smile, but so unhappy over her size and inability to wear cute clothes and swimsuits. She has battled migraines, too, tho the worst of that seems to be past. We also hope that, if successful, she will be healthier all round and able to enjoy sports again.
We would like to keep up with Hanna's recovery, attitude, and pros/cons to the procedure if that is OK. Maybe the girls can exchange email or IM addresses. Good luck to you both.