It sounds like her teeth to me too. It would be best to try and get her into the vet before Monday, if you can. I'm concerned as well, about her developing stasis due to how long it's been since she properly ate. If you can't get her into the vet right away to have her teeth checked, it would be a good idea to help her get food and water, even if you need to syringe feed it to her. Do you have any recovery food? If not you can soak her pellets in warm water until they are soft and mushy, then try to spoon feed it to her. If she still won't take it, you will need to syringe feed it to her. You'll probably have to blend it in a blender for it to be smooth enough to syringe feed it without it clogging the syringe tip. If she isn't drinking much, you will need to syringe her water too. Make sure to syringe the food and water slowly, giving her a chance to chew and swallow, so she doesn't aspirate any of it. Not being a vet, I can only make a guess and suggestion as to what is wrong and what might help. The best thing would be to get her to a rabbit vet right away, and get her properly looked at.