[From here.]

Under attack from what? If there's a threat, I'd like to know more about it.

[Because she doesn't feel like she knows enough about anything right now, even after talking to several others. Obviously they'd been brought in because their hosts needed a fighting force, but she needed details on what they were up against, exactly. Had her sister seen them? Could she get so much as a description?

Did they exist at all?]

If they can keep the thousands upon thousands of sleeping people in their ship safe you'd think they could make sure a few dozen have a safe landing.