everyday my friend gets mad at me for no reason. we have class together and we meet each other before and I would want to go to the bathroom but she wont let me because we're going to be late but we already are. but she can go to class by herself without me but she doesn't she just complains how its my fault for being late . its an everyday thing for a different situation . she blames me when she can go to class by herself she gets mad at me and doesn't talk to me the whole day because of it. like one time we met each other to go to class but I had to drop off a paper to the office and she says no were going to be late and I walked away and she started walking to class but a few minutes later I see her walk in the room where I was waiting for me and still blame me for making both of us late. what does this mean?