What an experience to have to go through. And certainly what a saint you are for paying for that poor cats medications.
What a horrid, shallow woman that girl must be to do that to her cat and not even care about the pain she could be putting him through.
Thankfully declawing is illegal here in Britain, and so it bloody should be in the US.
Something good came out of this situation, in that you were able to help that poor cat, may his pain forever be on her head.

If you have posh furninture then don't get a get a cat , simple as
If you don't want things scratched, fur everywhere, and a smelly house sometimes, don't get cats!
Grrr people make me mad they really do