This resolution kinda annoys me, since even if we want a peaceful resolution, the endpoint was that he's now taking part in Lucille's chores, just not with magic. Which, I'm not convinced he won't use magic during that anyway, so this is still just him intruding on her space, just less so than before. I would've been more fine with it had he left the chores to her, and focused on doing actually magical things, like setting up more wards against the attackers / whatever actually needs magic to work, so that way they were actually respecting boundaries and not intruding on her space anymore.
Still holding out on my "he's actually scheming" guess from last chap (though he really seems to be more of a yandere child right now), if only because him being a schemer means he'll actually be likely to leave at some point, lmao.