Wilhelmina? I suppose she and Amelia Bones did keep things rather quiet, but under the circumstances, I would think she'd be a difficult person to coerce reliably and securely. I can't confirm easily right now, without obviously prying, but I could once Susan Bones is back from holiday.

As to Aurora, I'm almost certain she's in New London. Given more than a few things she let slip, I can't imagine she'd travel back so quickly. I can inquire, though, naturally enough, next time we talk.