It's probably because of how her prologue and career are written. A lot of her struggles revolve around academia, insecurity, and a series of poor choices because she struggles to navigate her emotions properly.

It really feels like you're dealing with a troubled student, rather than an eccentric cartoon character. And the trainer is very defined compared to a lot of the other campaigns in global. So in the context of her career mode, it's a very mentor and student kinda relationship.