I agree probably GI stasis. Could be she is in pain too, somewhere, if it happened to not be. Rabbits sometimes don't want to eat or drink when in pain and that can lead to stasis, too, on top of other problems. 
If she's inside, it might be easier to notice this, but you could always check her nails. Once my rabbit ripped out a nail and I didn't even know, but he was in enough to pain to kind of cause a bit of GI stasis, which was what I first began to treat. I eventually saw him limping, too. One vet trip later and we realized he just needed pain meds.  

 Another thing you can check for is abscesses--if they have one, especially a dental abscess, it can cause them to stop eating. Feel under her chin and cheeks, and you could also do a full body exam. Never hurts anyways.
Your rabbit probably just has a little GI stasis, but for now and in the future I thought I'd drop by and let ya know those are some things you can look out for!
Also, I wanted to add that if you can, get some critical care. It's a powder with some nutrients and stuff, but you mix it with water and give it to them. Usually I just syringe, but you might be able to try the dropper if you're too uncomfortable for that. Critical care helps get water and a little something in their stomach, and I swear it has helped save multiple of my rabbits' lives before. 
I have syringed all my rabbits but I never even thought of fruit juice and a dropper, that is a brilliant idea Disheygirl!