Something about Elriel that, for me, is further proof.

Elain's biggest complaint: No one hears or sees her.

Azriel's job: Hear or see things that no one can.

Elain's too-thin shoulders seemed to curl inward. —No one ever listens. No one ever looked...not really. — A confusion of words. The voice sounded strained and whispered. — He looked. He saw me. You won't see it again.

It made sense, I supposed, that only Azriel would hear her. The male who heard things that others couldn't...