She might not realize that Leez was unable to say something. Yuta figured out because Asha had that problem multiple times while attempting to explain. At least, that's what I infer from the pages.
Of course there is always the possibility that she realized and understood the implications but was not saying anything.
True, it's possible she didn't realize it.
However, she insisted on the fact that the building was very very big and it would take months to visit all of it. Isn't it a bit too convenient for a manwha such as Kubera to have such a huge coincidence? I can't believe it was not on purpose that they walked past GodKubera.
And then, there's the look in her eyes before she suggests there's not much air. It's as if she had just confirmed something…
Btw, @Relinquisher 's theory is pretty interesting in the RITS thread but we were supposed to leave the first posts to essential things so I didn't dare comment it yet. Should we discuss about it here or in the other thread (which would get more lively thanks to that)?
I guess we can edit the first two posts to add the timeline and the rest, no?