Kaya knew full well that Eva didn't want to really tell her: she even had an idea that what she would tell her would change the ways he looked at her, so for their sakes, she could keep that to herself. "I'm glad Eva: because I do look at you as something like a mother, and that means I'll do anything I can for you, all right?"

It was a secret she never thought she'd tell, but was meant to make her realize she would never let her stew in her own pain without a fight. Her responsibility was to be a person that could lend them strength however she could., and it went double for Eva.