Our little dog ended up with pancreatitis.
Oh I'm so sorry. Is the little one being treated?
We tried.  We took her to an emergency vet, then our vet followed up with us for weeks.  She kinda overcame the pancreatitis, but she also had an autoimmune disease and her body started killing off her red blood cells.  She wasn't going to recover and she was in so much pain, we had to take her in to be put to sleep.
I am so sorry to hear that. I'm sure she had the bests life she could being part of your family.