I don't know. I didn't make any formal study of psychology, and I don't know her that well. I can't guess what would make her feel safe and stable.

[Those were a couple of the things his grief counselor was concerned with, after he witnessed Ai's murder. He understands better how to fake the right answers than determine what they'd be for someone else.]

Being consistent, I guess? Consistently showing that you're trustworthy and nonjudgmental, if that's what you're going for. With a suspicious teenager, it's probably better just to stick to a pattern than try to convince her of your kindness, as genuine as it is.