Hi I don't think I co-dependant I just tried to help her and this is how she thanks me. I feel as if I should just put up with it because of her issues but why should I?
But then I'm accused of not understanding! I can't win. I always felt as if I couldn't be myself when around her and always watching what I said just in case I said the wrong thing. I'm still very upset
SeannaMay: 
Nothing wrong with taking a break from someone. Some people go back and forth between no contact (NC) and limited contact (LC). Take some time to think about some
BOUNDARIES. You can decide to NOT rescue her. If you go to LC, perhaps, you only meet her in situations where you can easily leave when things start going wrong.
You might try to be careful to
NOT INVALIDATE. Don't invalidate by word, expression or body language. When possible, you might want to try to offer her validation of her feelings. You don't want to validate any invalid facts. You don't even need to understand her feelings, but sometimes, just acknowledging the feelings can be beneficial.
Perhaps just step back and take some time to take care of yourself? Put thoughts of your cousin out of your find for awhile.