Kinoko, my Shroomish used to be scared of things, but at the same time he really really wanted to help me. It meant he spent most battles just trying to pretend he was normal mushroom. But then he was with me when we all got attacked by a really scary Krookodile, and he evolved shortly after that and now he's not so scared any more.

[She pauses, apparently realizing that she's been sort of babbling.]

I'm not sure if that really helps, sorry.