Mistaken.

Stereotyping has taken a new meaning for me. When you call someone gossipy, what comes to your mind? How bout a joker? Or a nerd? Or a slacker?

Certain traits attached to the label are generalized to the person identified as that. I think it deindividualizes the person, as much as it helps in the cognitive encoding of social information of the person. And if you are not aware of it, you run the risk of not understanding the person fully, if not at all.

It's not fair, it's not right. When you look at her and label her that. It's even worse when the traits you have about the stereotype are mostly negative. You've shattered her heart and her trust in you. There was no need for it, no need for such utter tactlessness. Because in doing so, you place yourself in the position I would call arrogance. Pure arrogance to think that you know the person well enough to judge. Give her a break. She is as human as anyone of us.