Sigh...I can relate with her. If her BMI is really over 40 (morbidly obese) and she is really desperate I would direct her here:
www.obesityhelp.com
That site was my home for four years and saw me through my weight loss via medical intervention. I would highly reccomend the lapband.
If I hadn't had that done, knowing what I know now, I am now a huge advocate of lifting heavy ass weights and journaling everything on fitday.com.
I'm KNOW you know all that though.
Honestly without surgery, I'd still be a fatty. For Real. The cure rate for obesity is in the gutter. Once your body knows how to be obese, you will stay that way usually.