I know of 2 pt's who have had gastric stapling, all over 4 years ago or more.
One nurse, worked in OR has constant diarrhea, hasn't really lost any weight (b/c she still eats like a horse) and is always having bowel problems.
Another, a dtr of a HH pt I admitted became so emaciated, she started at 400 lbs, now weighs 85. She has constant nausea, looks like she has major protein deficiency, ascites, looks 10 months preg, is weak and unhappy.
I have heard of many other people, but don't know them, who have had this done, none were reported to have good results except one.
In all seriousness, I would recommend she have her jaw wired shut and be put on a medical liquid diet, before trying this very drastic surgery. I think the doctors should have had better sense than to recommend this procedure. Has she been seen by an endocrinologist? Hormone levels checked? Food allergies checked? I feel for her I really do. Trust me when I say, I have seen many a home care pt who is debilitated by obesity. It is a serious problem, unfortunately, no one has the answers.
The best way to loose weight is and always will be to eat properly and exercise, which sounds like it's out for her. So, she can only try to eat properly to start.
God bless you for caring so much! Hugs.