Do you think this girl has any right to be mad at me?

Are you seriously asking or just venting? Whose fault is it? Completely irrelevant though it sounds like hers. (but you already knew that). Does she have a right to be angry? Like it or not she has the right to feel whatever emotion she chooses. If she's continuing to take it out on you then its apparent she needs someone aside from herself to blame it on and lucky you, you're the closest target. Don't like the way you're being treated? Do something about it. Otherwise stop asking others to defend you when you already know the answer.