[Wren might not be more than a couple years older than Deuce but they're very familiar with training others - and moreover, Deuce hasn't failed, thrown a fit at Wren for the failing, and proceeded to stop trying. It doesn't matter if he learns slowly, he's already one of the better people Wren's had to train for anything just because he's clearly making the effort. It's downright pleasant.

Wren also might no longer have their super strength or other heightened abilities - but they still have all that martial arts training and the like. It isn't like they're helpless, so holding on to Deuce while he regains his balance hasn't knocked them over too. Not yet anyway, though there's been a few wobbles.]

It is, isn't it? Not exactly natural movements people do when we don't have wheels strapped to our feet. You're doing really great.