[She looks at it.]

Oh. That's from her Study, huh? It's one of the things she uses to study the Void. I think she tries to use it to listen and see if anyone there has anything to say...

...there is one other thing.

I've noticed when she's really nervous, she just listens to it, without saying anything back or listening for a specific answer. She just listens to the voices.

It seems to calm her down.