Just wanted to add that I read a blog once about a chinchilla that had a bad electrical shock and it ended up killing her tooth roots - I wish I could show you it, but I've searched and can't relocate it. I think the blog was by a German couple and they had two chins, the older one was shocked. Perhaps someone on here has read it and can tell you.
Anyhow, the chin lived for a few years after the event but her teeth were never the same and eventually fell out. This shock doesn't seem nearly as bad as hers, she almost died when it happened, but it might be a good idea to keep a close eye on Tifa's teeth and eating habits as she recovers.
I wish you all the best, it seems hopeful at the moment!