...well, um... that part about Miroku fills in some gaps, at least.

[Apparently mortal embarrassment has negated Yasu's false bravado, so she's talking slightly more normally now.]

Based on the visions and everything that we've heard, and, um, our encounter with that poor girl in this very room... Miroku was responsible for sealing Kakuya—w- which I maintain is not the best solution for dealing with her! Ahem. As part of that process, he occasionally sent "dolls" through the mirror to her, which were... mutilated young girls, if... that poor bird was...

[She shakes her head rapidly.]

That's all in the past, anyhow. Keep going.