The look she gives Snape is withering, she's not even remotely scares of him. When Charity flinches, Steph says softly, "He won't hurt you." It's a promise, not just a reassurance. She won't let him hurt her.

"This city is called Baedal, its population is over two million, all consisting of abductees, or the descendants of them. The government is in control, but they seem to have no interest in harming anyone so long as we accept our new home," she doesn't want to say too much more on that, its not important right now, she'd just wanted to give Charity a little more information, "If you're feeling up to it, I'd like to try to get you somewhere more comfortable, so we can get a doctor to come look at you."

She's not sure if Charity has injuries other than the visible ones, so she doesn't want to risk moving her too much.