She prefers to be an annoying asshole. You're just not allowed to call her that.
I was angry with my sister when she "spied" on me. I took her to "court" for a "trial" and the "judge" gave her time out and a 4 hour supervised probation period.
But it would be a whole different ballgame of actions and consequences if some random person were to do it Neither is ok. But one of them is more severe than the other.