Once you re-kill the zombie, it's not a zombie any more - it's just a corpse again, and if she's lucky a corpse that has only been dead within one of the shorter time brackets. You couldn't raise him from his zombie state, but you could put him down, and then raise him, provided the body was intact enough.
You're right, of course, that sourcing some gentle repose would have been a FAR better option... she's going to be looking at at least the 1 year time scale by this point, even at best, I'd wager.
(I agree, she's not a favourable character... just not entirely hopeless yet, if you wrangle it right, I feel.)
