Oh my gosh, poor Keely
! And poor you for being in this situation! Is there NO OTHER vet you can take her to at all besides that ER vet?
I'm
very concerned bc this could a life/death situation. What is going on w/ her poo these last few days?
Okay...you must keep her hydrated - add honey or karo or even sugar to her water to try and make the water enticing. If she will not drink, you need to use a non-needle syringe and force water into her. You can also try to give her Pedialyte.
I would
not give any fat at all, and very limited protein. Get some canned or fresh potatoes - micro them (or cook) and then mash them. I really would give only these until you can get her into the vet for blood work.
Honestly, I'd be very hesitant to give home remedies, given her symptoms. But since you are in such a terrible situation - you could give 1tsp Pepto (liquid) right now - and more later.
She really does need to see a vet - so I hope your vet's office opens soon. What does their answering machine say? Are her gums pink or white? How old is she?