This is...Well...extremely selfish.
So the protagonist has an idea how her idol is, when confronted with reality, that her idol is actually a human like anyone else, she starts to despise her
The idol then, because she is attracted to the fan in some way, seeks her out and the protagonist is full of "reason" accusing the idol of tarnishing her ideal image and then propose change the idol's personality to meet her own ideals. ..
wow ...