"我应该怎么样才能调整心态，不要对她有这种情绪呢？"

Think: My boss is (or sets) the standard. His standard is my standard. If he is OK with her, I am OK too.

Don't let her distract you. If you are distracted, that might be the reason she is there in the first place.

Triangulation is a favorite tool bosses use to balance out things.