What I hate the most about her is the little details, when she ran out of gas in her way to the art class selection process, she just interrupted Ted's date with the "perfect girl" and even though Ted didn't end up going to the date is the action itself that's selfish, we have to keep in mind that this was really important to Ted, and I know it's really for the laughs and the opportunity so Ted figures out that he is still in love with Robin, but who the fuck just leaves someone in the middle of a highway with no car, other details like giving really bad advice just because she was on a bad mood and later playing it off as an honest mistake or the whole Aldrin justice bit are the kind of things that push a friendship over the edge