He didn't come out and say he doubted her, but that step backward certainly said it for him. Wendy holds her hands up, palms out, and tries to look non-threatening.

"It's okay, I'm not going to do anything if you don't want me to. It wouldn't hurt, it's just a quick spell to close up those wounds."

Privately she's a little amused. Usually she's trying to convince someone she's not a witch, so this is kind of backwards. She lowers her hands, but doesn't move any closer.

"Where I come from, magic is a real thing. I guess that might sound pretty crazy, depending on where you come from. But if you'd rather let the doctors handle it, that's fine. I get it."