I'm not going to help my sister with her panic attacks
Why don't you want to help her when she's vulnerable?
She has too many attacks and it is annoying.
I understand that being around someone with mental illness is taxing, and she is your sister. You should always be there for her as she is family.
She should take care of her own health and leave me out of it.
People with mental health illnesses do need the assistance of others. Since you are family, the onus is on you. Maybe you both can go to a mental health professional to find out what you can do to ease the burden.