You know, I was waffling back and forth for a while on whether she'd be able to work dead people (i.e. you and Puella Magi) at all. No canon precedent. But you made a pretty convincing argument here about him being easier to work on and also maaagical so! Healing Mitchell is a goal and probably not too stressful. Aside from the jeez you're a corpse heebie jeebies. \o/