Wandless magic in the Harry Potter, if she remembered correctly, was much wilder and more unpredictable than Billy's spells, but the principle was similar. "Yeah, it's something like that. You'd have to meet him, it's always easier to show than explain."

When he said 'fifth year', her breath nearly hitched. Halfway through Order; Sirius wasn't--Oh. Oh no.

She tried to keep her features neutral, but was unsure if she'd been successful in hiding the sudden anxiety. Composing herself, she said, "alright, that's fine." She smiled, "and yes, Ron and Hermione are just as important as Harry is. By the end of the books you're familiar with pretty much all of Harry's friends--and enemies--and their families."