Who knows? Maybe she found someone else to pry into their heads and look at their memories. Or maybe there was a threat or something.

The latter seems more likely. She did just tell Fira that she's in danger.

Very true. Fira peeped over Katurva to look out the window

Its getting stormy out there.

She wondered if maybe that was what she was staring at? The oncoming storm?

Soon she hears some thunder.

Even if it was far away or quiet, she jumped a little. A thunderstorm. Of all the storms, it had to be a thunderstorm? Great.

They wont be able to fly.

And even if they could've, she would've been too scared to even get off the ground. She hates thunderstorms.

Its dark out.