He wheezes for a second in surprise, but then wraps his arms around her as well. At least, most of the way - his finger tips might even touch!
For all that he's a clammy, scrawny, his hug back is solid, and warm. He'll never be tall like a troll, but he has grown from the spindly kid she first met being bullied into a corner. His hands don't roam, there is no expectation, or demand, just comfort, in touch. He draws away after a few moments, before it can last overlong and get... weird.