Just my opinion here as I'm not a vet but I too would question such an abrupt food switch. If it were me I'd take her off her current food and go to the rice and boiled hamburger until her runny stools were under control. Seems to me that she needs a bit of "bulk" which could be easily given in the form of canned pumpkin but in all honesty the rice and burger should do the trick alone. Wouldn't be something I would recommend doing without discussing it with your vet but it's something I would ask if it were me. jmo
Colitis is very possible. Has your vet recommended a course of action for her allergies yet or waiting on the blood panel before going further? I hope she feels better soon!
