Tara lets out a soft 'oh' and smiles at the explanation. Yes, she probably would've been more startled by the rocking of the bridge than the voice. She's got her feet firmly planted and is holding onto the rope railings though, so jiggling of the bridge doesn't cause much trouble now she's prepared for it.

And then she lets out another 'oh' at the question, not answering immediately, glancing over at where she'd conjured the lights. ...Well, given the fact this woman's first assumption was magic, that would presumably be someone at least passably familiar with magic as a real thing rather than just something from fairy tales. So, probably not someone Tara particularly needs to hide it from.

"Um, yes," she answers finally, and returns the smile. "Nice to meet you. I'm Tara." She gives a little wave.