Nonverbal and wandless casting is markedly difficult, so that part isn't a surprise. But the fact that he seems unable to channel magic without a wand is the first obstacle.

Heine isn't quite sure why he's trying to teach the kid about it. Maybe because he thinks wandless magic is a perfectly valid method to learn, maybe because Jade has found something to pursue and in the end, he hasn't.

Maybe he's just trying to avoid doing work. Either way. As his own wand is dragged away by magic, Heine watches. The movement's a little slow, but it's working.

He raises his own hand, palm out, and says firmly, "Accio." His own wand flies back to him, accompanied now by Jade's, yanked out from his sleeve, pocket, or wherever he's been holding it. Heine catches both in one hand and turns his attention to Jade's.