I heard my cousin blame her parents for her pain

My cousin had dealt with a lot of pain especially physical pain due to her chronic back pain. I went to her house one day and she got really mad at her mom and she was yelling at her for doing something and when she gets mad she brings up all the pain she has endured. She screamed at her and told her you are the reason I have back problem, you are the reason I went through so much pain. She is right, every pain you go through, no one is more responsible for it than your parents.