What do you think about me being rude to my cousin because she was rejected from her dream university and I got in?
That's great you got in, why do you want to be rude about it to your cousin?
Thank you, Good luck finding another school better than my dream school.
I am glad that you got into the school that you liked. Try to imagine how you would feel if you did not get in and take that into consideration when you see your cousin.
Well, she can go somewhere else, she should still be happy that I got in.
It's not okay to be rude to your family and inconsiderate of their feelings. Doing this will cause them to see you as someone they can't trust.