Personally, having dealt with narcissists in my life - I don't like that post. Much as she is hurting right now to pop that on social media to gain sympathy from thousands of followers, most of whom are strangers to her, smacks of a deep hole in her psyche where she can only function when getting sympathy/attention/validation from her followers. It's oversharing and it's designed to get sympathy. I think it's true that she is both suffering from the break up AND has a pathological need for attention. As others have mentioned, she needs to keep her social media professional - but her need for validation is messing that up big time. Therapy would help her to overcome the break up and also realise things like this.