<human>: Can you condense the text into three sentences or less?

Not sure if this belongs here, but here goes...

My 28 (almost 29) year-old fiance has been slowly losing weight over the past approx. 6-8 moths. She's a very petite person, at 5'1", and a normal weigh in at about 107 over her lifetime. At the current time, she weighed herself last night, she was 99. She's been slowly going down from 107, to 105, 103-104, and now the 99/100 that it's at.

A background:

- Her mom's side: both her mother and grandmother have had trouble at times in their lives gaining weight or putting weight on, and have both dipped to around 100 or so.
- Her gall bladder: was removed during college. This was the beginning of all her horrific stomach problems. She can't digest food at all that well.
- Her gluten allergy: not Celiac, but is crumpled on the floor if she has it. It's a severe intolerance. She's also is dairy free as that upsets her stomach a lot (IBS)
- Her trying any new foods: always a bad turnout. It could be something so simple or bland, but if she isn't used to it, she gets horrible pain.
- Her gastritis: has had it for a while now, maybe a year. Terrible pain there (also acid reflux at times)

So with all of that said, I should note, my girl DOES eat. She eats good sized (still very, very healthy) meals and has multiple snacks during the day. She is NOT trying to lose weight at all. She has an appointment with yet another GI doctor next week and maybe a nutritionist after that.

But does anyone have any thoughts? I'm way more nervous than she is over this whole thing. I always told her I'd be nervous if she got below 100. And now we're at that point...
<bot>: Fiance usually 107 lbs, but past 8 months has lost weight to the point of 99 lbs now. I'm worried.