She's thinking about this in tactical terms and knows that, if she wants the upper hand, she needs the element of surprise, but every second she left him alive would be an opportunity for him to use his powers, and she can't walk that off. If this is the right one, she knows he won't. If it's the wrong one, then his potential behaviour is a great big unknown.

She still hesitates. He must know she's there. She could stay here all night, she has the patience for it, but what is she going to do, just continue following him around, waiting for incontrovertible evidence of his identity that he just happens to slip into normal conversation? It's not going to happen. The time for observation and waiting is over, so she moves.

Snikt.

It's a distinct noise, similar but different from a switchblade opening -- different enough that someone who's heard it enough can tell the difference.

A moment later, she steps out from behind the trees, close enough to be visible but far enough away to not be immediately threatening. Her face is only half-illuminated by the shaky, dim light of the lamps, but with her uniform and those eyes, not to mention those claws, who else could it be? His reaction is important; she'll sense any dissembling right away. Laura might not be good with people, but she knows enough about body language.

Hers is tense. More than usual.