"She's unharmed," he says. He chews on his lip as he tries to figure out exactly what to say to her friends. "Physically. The Master---"

How is he supposed to phrase this? Casey seems open-minded, but it took an age to explain mental walking to Morgana. Gwen might not understand. Still, he has to try.

"The Master hurt her. Psychically. Sort of like...magic, I guess, is the best way to explain it."