Getting worse doesn't sound good at all - I hope the vets are keeping a very close eye on her - I'd be worried sick that's for sure - but at least she's in good hands vs being home......
good luck ! I hope she'll be ok. Just knowing she is this weak and not better tells me the vet was your only option - as with all falls especially when they get knocked out. I'm surprised they didn't keep her that first visit
there could be something else going on with her to be this bad off this long after it happened
again - all the best !
you may want to think about stairs and ramps for anything high they can jump on