Pet question!!!

[lwbaby]

We have a cat and dog. Our cat(Olivia)is 2, our dog(Princess) is 3. We have had both simce they were babies. They have both been to the vet regularly, both have been vaccinated and are healthy. They are both indoor animals and except for Princess being walked, never go outside. In fact, Olivia (our cat) has never been outside. They have happily co-existed together until today.

This evening, Olivia went off on Princess. All that was lacking was the 360 degree head turn and accompanying pea soup vomit. We separated them and let both chill for a while. Didn't help, Olivia still several hours later was hissing and growling anytime Princess came anywhere near her.

Now, Olivia caught a mouse in our garage last weekend. Even though Olivia has been vaccinated for rabies is it possible for her to have contracted it from the mouse?

Olivia is spending tonight in the garage because we are afraid to have her anywhere near our children or Princess.

Obviously, we will bring her to our vet Monday but (par for the course for us) this has happened on a Saturday when of course she is unavailable. Does anywhere here have experience with cats suddenly turning like this and what was the cause and more important, the solution.

Any thoughts from pet owners?