"I wouldn't worry about that, usually when learning something for the first time it drains you before you could hurt anyone, when it doesn't drain you so fast you should be able to control it."
She considered a moment. "That could also be a problem. Magic, at least the sort I'm familiar, you have to 'allow it' to happen. If you're scared of it, the chances of you making a mistake are increased because you're so nervous. Fine line between respect and nervous fear."