I am really glad to hear you are getting her to the vet!
When cat's cant smell their food, they won't eat. It would be worth trying some of the smelliest canned food you can find (fish types usually smell the most).
Since you are getting the cat to the vet tomorrow, I'd say the most important thing to concentrate on is making sure she doesn't become dehydrated.
You can check for dehydration by lifting a fold of skin on the scruff of her neck. When you let go the fold of skin should go back down immediately. If it kindof 'tents' up and goes back down slowly, the cat is dehydrated.
If the cat is dehydrated, try to force-feed some water via a syringe (minus needle) through the side of the mouth - expect to get some water everywhere, but you should be able to get some into her.
If she is dehydrated do keep a close eye on her - if you notice any sudden change, you may need to rush her into an emergency vet immediately. Otherwise, she'll get through until tomorrow's vet visit.
A cat not eating for several days can cause serious liver damage - and the vet may recommend force-feeding her to get her eating again, but for the timebeing, just concentrate on dehydration until you get to the vet.
Hope that helps, and best wishes for her recovery!