Wayne, if I were you I would at least call the Vet. Did you check her mouth to see if she might have a sore in it or something caught? Cats can't go very long without drinking so I would start to worry - if she isn't eating or drinking. Keep us posted. Hope all turns out just fine.

SAS
P. S. I have discovered that it is sometime cheaper to figure out the problem early on, rather than let it get out of control, thus I recommend a visit to the Vet. But of course, it is your call.