I don't have any advice, but my heart aches for you and Stormy.
I will keep you both in my prayers
and hope is something simple like an ear infection. If her sense of balance is off, it could be affect her tummy too. You know, like motion sickness.
I can't think of the name of the company that helps with loans for pet care. I'm sure another YT'er will know the name. Perhaps you can look into that also.