How old is she? Could be a urinary trac infection. Some people get tummy aches from changes in water, it doesn't even have to be contaminated, just different. So I have one of mine drink bottled water.
I guess it depends if it is localized or her whole tummy. Good luck with that. :)
Thanks, in the end it appears to be a combination of gastro and stress...
Glad you got that all settled!
Ready for the next crisis...