"I - oh." Aziraphale blinks for several moments, trying to wrap his head around this sudden wealth of information. He can't quite comprehend the particulars, but the general thread is easy enough to follow, and it does explain rather a lot. The odd extra levels of consciousness he's sensing must be this fungal entity. She believes she is a monster - and she is, where she comes from. She sees this living situation as thoroughly justified. Necessary.

"I see." He looks at the floor and runs a hand over his hair, trying to think of something else to say. "I, er. I'm sorry."

He lifts his chin again, meeting her eyes. "So this is how you lived in your world, as well?"