Hi and welcome to Pet Talk. My RB Pepper went through a few periods of not eating. I had to buy some special food from my vet and then dilute it with water and put it in a large syringe and then force feed him several times a day. If cats don't eat for long periods of time, they get liver disease. The other option is to have your vet put in a feeding tube but I'd only do this as a last resort. I'd try to force feed her if you can and hopefully she'll then start to eat on her own. Good luck and please keep us updated.