     As the title suggests my girlfriend has borderline personality disorder. I know her spins of affection and than dislike for me or herself is normal. I know that they sometimes see things as black and white. And deviating from routine is bad. 

     But I do not have a degree in psychology. And almost every resource I find is for people who do have it. Not their partners.
    
     So how can I properly support and help her? 

She is in therapy but I don't want to make things harder on her

Tl;dr : My gf is borderline, I need some guidance on supporting her correctly