He was too caught up in the awe of seeing what she could do to notice how much it had taken out of her, at least until she grabbed his shoulders. "Are you okay?" Now it was evident that a supreme effort was required to keep up the shield, and since he couldn't just let her fall he let his arms go around her waist to keep her steady. "Yeah, it doesn't look very easy. Just don't push yourself too hard." At least his ability didn't require too much effort - he'd felt a little tired after calming down the mob, and his throat felt raw, but that was about it.
"That's one hell of a hobby." Bran grinned, and he thought about how she'd probably never have to worry during the full moon if she managed to get a better handle on it. "If you can cast a shield spell, though, I think it makes you a good witch - not one who eats children."