She's finally home. We brought her home last night and she spent the day with our vet getting more IV fluids. Her labs are still a little high so she goes back tomorrow to check them again. Hopefully we'll be in follow up mode now until we get her off the meds. Thank you all for the sweet thoughts for Lexie.
I'm thinking pet insurance is in order for this little undiscerning eater or ours. I mean she eats kitty roca" (if you don't know, don't ask) so there is not telling what's next.