Post-op 14 months - Stricture?

My wife had R-n-Y surgery a year ago August.  She has lost over 184 lbs, and is still losing, and it's getting to an unhealthy point.  The problem is, she throws up every meal... she had spoken to her surgeon and dietician about this, and they've only told her to follow the diet plan, and it will get better... after reading up on strictures though, I think that may be her problem.  I've asked her to contact her surgeon to discuss this again - from what I see, NOBODY is throwing up more than 12 months post-op.

To us, this whole ordeal has felt like it's glorified bulemia - she is actively trying to gain weight - drinking Ensure, eating sweets, (when she can keep them down,) and nothing is working here.  Her sex drive is shot, (pretty sure it's being caused by malnutrition,) but when her normal doctor tests her levels, everything is fine!  (Except B-12, she gets injections of that.) 

I don't understand, and starting to get desperate.  If her surgeon won't scope her, is it time to find someone new?  Does this sound like a stricture to anyone?  Even more troublesome - if it is a stricture, can it be fixed after this long?