Help what do I do in this situation?

Oh dear, you sound lie you're having a really rough time of it at the moment. For what it's worth, you don't sound weird at all, you sound very level headed. I'm not surprised you feel you have low confidence-families are supposed to be supportive, which helps our confidence to grow. It sounds like all these do is bring you down. you don't say how old you are, but if at all possible it might be an idea to give yourself some space and time out from these people for a while. Could you stay with this other cousin?it seems like you might feel more comfortable with her. Since they suggested it, maybe instead of confronting them tomorrow, you could smile and just say that you would like to get to know your cousin and would really like to spend time with her. That would probably surprise them!Good luck.