and they had to pull out 7 more! She has barely any teeth left

. They said that the reason why the teeth stayed in was they were being held in by tartar. My poor girl was in pain this whole time and I didn't know it.
Now, what do I do?! Any food suggestions? Treat suggestions? Dog mommies with doggies that have lost their teeth, did your babies change at all? I'm so distraught and upset I can't stop crying even the vet was in shock at how bad her teeth were and I had gotten them cleaned a year ago! Please help