You'd literally have to be deaf to sleep through the commotion that's happening in the rig right now. Rey hears the scuffle and it makes her bolt out of bed. She's not sure what's really happening but it can't be good.

She doesn't even bother with her slippers, just jogging barefoot down to the source of the noise and now light--

"Oi! Hey! Stop that!"

Both of Rey's hands jut out in front of her, and some unseen force is tugging on both of them, trying to pull them apart from each other.