If you ask me, Noo is ironically a better ally to Dilan than Valia, and she was the one who made it possible for Dilan to get turned into a Katalist in the first place.
I mainly refer to being cutesy with her when it comes to the dialogue choicees, doing so will actually soften her demeanor, she won't stop using you to regain her full power but at least she isn't lying about her motives and isn't afraid to tell Dilan about how he can use essences in ways not even Valia thought of.
Every time I read how she replies when you're submissive to her and act all cutesy and innocent with her, I can't help but imagine a cool aunt vibe with her, it's personally funny.