<human>: Give me the gist of the text in a nutshell

My girlfriend and I have been dating for 2 years. I have researched borderline personality disorder and I believe she exhibits the majority of the symptoms. I am nervous about bringing this up to her for a few reasons. 

I'm not a doctor and I am far from certain about this. Also, she already has a negative self image and I don't want to make that even worse by telling her the person closest to her thinks she has a problem. She tends to over think things and I know if I told her this, it would constantly bother her for a long period of time. 

I am considering not mentioning the borderline personality disorder part and just recommending she begin attending therapy again. She went to a few sessions a year ago but then stopped going.
<bot>: My girlfriend may have undiagnosed borderline personality disorder. Looking for advice on how to bring this up to her so she can get help.