do you have Slimming World where you live?
its really easy to follow and loads of people have lost loads of weight on it. I'm doing it at the moment and you can still eat the food you like, but it teaches you to choose healthy options. There are meetings where you can socialise with like-minded people and a magazine too (which you could maybe buy and leave around the house?). The people are really inspirational.

I'd definitely look at this before considering surgery, and you have to lose some weight to get surgery anyway.

oh, other dieting clubs are available....
(TheFlyingOnion. looking forward to, Thu 26 Aug 2010, 22:22, 2 replies)

surgery
you have to go on a liver reduction diet for 2 weeks, that's all. you will lose weight on it, believe me, but that's all i had to do before my surgery.
while weight watchers is fine for some, i'm not sure it'd be the right environment for a young woman who's been so coddled by her family. there's a good chance that she may see the loss of a pound as an excuse to "treat" herself to something she enjoys, which will invariably be fattening. drastic times, drastic measures and all that. i don't know the OP's sister, so i can't say for sure what'd be best for her, but i would definitely recommend surgery. not gastric band, gastric bypass. more drastic, but weight can pile back on once the band is removed.
( Smash Monkey lowering the tone of the whole internet, Thu 26 Aug 2010, 22:43, closed)

Serious
+1 for Slimming World. They are a business, but the plan works and it is fantastic.
(WittyUsernameHere, Fri 27 Aug 2010, 17:59, closed)