"Whoa," Romilda said appreciatively, staring at Tonks. "That's brilliant. How do you do that?" If there was a way to change her hair color by wrinkling her fucking nose, she wanted to learn. "I mean, I'm pretty quick, but I'm not that quick."
Since they were doing demonstrations, she lengthened her hair and turned it blonde, then shortened it again and turned it red, which was one of her favorite looks. She was quick, but it had taken her longer than Tonks, and she'd had to use her wand, albeit as discreetly as she could.
"Hopefully not," she agreed, "But it did come in handy in a training exercise. Nothing else anyone else tried was working, but I made 'im stop in his tracks." It wasn't that she wanted to use an Unforgivable Curse. Or, formerly Unforgivable, but now they were legal. And very useful. "And the emotional thing works well for that kind of curse. But-" she shrugged. "If I don't have to use it, that's all good, right?"
She was still grinning, though slightly worried that she'd offended her new mentor. She'd been encouraged to learn that curse in training, though, so surely it couldn't be that bad? "Yeah. Control is what I need in general, I think. I want to fight bad guys and help people, I think I could easily get too caught up in it. But I'll try really hard to control it, I promise."