Theodore had tried to stay out of their way. He'd done enough to ensure that Rosier was in good enough shape to be up and about, and he was always somewhere nearby, working on his homework to catch up for school. He checked in on them regularly, just poking his head in, though not very often; he was certain that if Rosier took a turn for the worse, he would know about it immediately. He still had medical charms on him, to keep track of his vitals, to alert him possibly even before it became a problem that Barty or Rosier noticed, and he was available to do whatever was necessary to fix it.
Thankfully, it hadn't been. In fact, it had made him reconsider this whole set up that Barty had arranged. Staying with them was a good idea on principle, but Theodore could get more work done in the library or his own room, and if he didn't need to be here, there was no point in him intruding on their home life.
"He's a lot better today," he said. Probably that was the best present of all, he thought. "Better enough that I don't think you need an in-house medical staff, actually. You have the potions he might need, and he can just come to the infirmary - or to St. Mungo's - to check in as he gets better. If I'm not needed here, it would really be best if I went back to school."