I hope red is feeling better soon!
I agree that maybe it would be better if you brought red home if you are around all day. Keeping her at the vets is putting her under more stress which then stops them wanting to eat...stasis etc. The only thing a clinic can do is put a bunny on a drip if they are dehydrated, but everything else you can do at home and I find that bringing them home helps them recover quicker. I would bring her home with some metoclopramide, zantac, metacam and critical care food. You can syringe feed and give her fluids orally??
Good luck!