She's more than capable of deciding when to risk her own safety, kind as it is for him to worry.

"Let's not think of it as hurting myself so much as getting a lot of practice at my healing spells, hm?" Because there's no way to get him free without a little pain. If he holds still she shouldn't be losing anything she can't replace, and what's a little blood between strangers? A few scrapes and nicks won't kill her.

"Wow, you've got yourself stuck in there good and certain. You don't do things by half-measures, do you?"