Well, I knew something was wrong because every time I'd go in for a fill, they'd put in more Fluid, but the tightness would only last a day or two before I was starving all the time and could eat anything in large quantities very quickly, as though I didn't have the band at all. It was months of this running around before I finally managed to convince the doctor to take out what he'd put in and compare, and I was missing most of the fluid that was supposed to be in my band. I recommend that if she's still able to eat normally despite multiple fills, she talk to her doctor about it seriously, since mine was very reluctant. Hopefully that's helpful.
And thank you both for your well-wishes.