Thank you all for your caring and encouraging remarks.
I have considered switching vets. The vet that is actually my vet is wonderful. I can't stress enough how much both Sydney and I love this guy. But as many of you said...the problem is that if we are in an emergency situation I may get stuck with this bad vet again.
Syd is doing better. She ate bunches yesterday and this morning and she seems to be getting her strength back. She is still sleeping a ton and just wants to be on our laps. But that is kind of good because it is keeping her from being too active. We had to get her the cone-collar yesterday to keep her from licking her stitches. She seems to think that this is an insult and she has seemed kind of depressed since we put it on her. But it's for her own good. Poor baby. Hopefully she cheers up soon.