What if I go to therapy and am told I'm a shitty person?

I'm going to therapy next thursday. I've been to therapy before but that was either for other problems or because I was forced. Here I'm gonna be talking about my nparents and my problems socializing. When I tell people how my parents are they tend to agree that theyre abusive, all of my friends who have heard or seen how my parents are hate them. But still, I'm nervous I'm gonna learn I'm a narcissist.

My nparents narcissism has rubbed off on me in a way where I've started using their tactics back to them, but I feel like I'm doing it to survive. But maybe thats just me justifying it like they justify their behavior. But its like, my mom will say 99% bullshit and every once in a while will actually use logic and reason and I feel like if I acknowledge it shell think the abusive shit she says all the other times has a point when it doesnt. I'm also nervous about the things I think about her, because I'm not gonna censor myself at all around my therapist.

I've often said shit to myself about my mom like I hope she dies and stuff like that. It's all really horrible shit, I don't think such bad things about anyone else I dislike, I really only hate her my dad my step dad and my sister. Then shell act nice for a day and Ill think "Maybe Ive been over reacting for the past 19 years." Then shell do some fucked up shit again and its right back to "I hope she dies."

What If I go to therapy and they tell me I'm a narcissist or something? I dont feel like I'm a bad person but I dont think most bad people think they are bad people.