Rex is covered in exaustion, it shows in her face, and her body. But she asks Rasui with a tone of total concern, "Should we follow, see if she's in trouble or needs help?" Rex sits down cris cross, she doesn't know what to do, she's worried about Night, and as she waits for everyone to get ready to run after Night, Rex worries about if he says no. What would Night be doing out there all alone in the dark and slightly cold. And if Night would ever come back? Rex thought she might miss her already. Then started tearing up, after that, just pouring buckets of tears.