She'll understand why he's all... not happy. But that doesn't mean he should just abandon the games just because he doesn't have any practice with them.

That said, she would be inclined to offer him some time to play the games in her office [believe her, she is also sorta suck at them, and if they practice together, they might get better at those games. Besides, they're fun, aren't they? Also, more opportunity for her to attempt to bond with one of her students!], so it would be up to him if he wants to do so. Would be a great way to de-stress from a hard day at school?