Youch! With all of those problems (especially the cancer - you can't 'restore' that away, sadly!), I'd say she'd be okay to be baited. I know I definitely have one that is in my bait box, who I got for a song from someone else's baitbox! If you prefer to restore her, of course, that's fine - but if you're looking for custom bait, she sounds pretty bad-off to me!
(A FF Minty or Snuzzle, now, I might reconsider, even in that terrible state, just because they're the more HTF ponies of that set. But Cotton Candy, IMO, is the easiest to find.)