"It spoke to the three of us--the Innocents. It seemed just fine with Toge--he's the Pleroma. But it acted like we hurt it somehow--Gray and I."

Which probably clarifies why Meteion is so upset. As an empath, she's more attuned to feelings--and pain is involved in that.

"Monster it might be, but it was...overwhelming to me. Feeling what it felt. And--I understand how you feel, Majorita. I don't know what happened to you, other than what you've said, but...it reminded me of things I didn't want to remember either. My sisters. Life back on Elpis--before I gave Hermes my report." The horrible things she and the Meteia had done--Meteion hadn't really done them herself, but she certainly didn't try to stop it either, buried beneath the weight of her sisters' will...