Hi, one of my cats had the same problem except that it was his lower teeth that were too long. My vet filed them down a little bit and he has been fine since.
If this condition goes untreated, your cats mouth could become infected and inflamed and hamper her ability to eat or drink. If she isn’t able to eat, her health will suffer and she will, potentially, die of malnutrition.
Your cat could also suffer from a systemic infection which would make her very sick, on top of other pain or problems caused by not being able to eat.
One or both of these things might already be happening.
Even if these things are not happening, they soon will.
Your cat is also likely to be in a lot of pain, even if you don’t think it hurts her.
Cats are very good at hiding their pain.
Call your vet, this minute!
If your vet’s office is closed, call in the morning at your first opportunity.
Go to the vet.
Go directly to the vet.
Do not pass “Go.”
Do not collect $200.