I don't know exactly what her motivations are. But, when people get upset, whether its in the beginning of your romance together, during, ect, it means that something, something about you, about her history, whatever, matters to her. People don't get upset like that at anytime, over anything, large or small, unless something about what you have together, whether or not thats you, or the way she feels, whatever: that's how much she likes you. Don't look at it like oh this is craziness, cause that's not the point. The point is, she is invested enough even at this stage to get emotionally involved with you to make this little drama. I think what you would have to ask yourself is it she worth it? No point in overanalyzing her behaviour as far as to say that its not the content of what happened, but that she feels strongly enough about you to make her test what you have, or might have together.

People don't become involved like her and do that sort of "game" playing unless they feel they could have something to loss. In this case, that sounds like the something she could loose is you. Don't be a typical macho brazil prick .....and listen to her. Listen to what her desire to have you is telling you. Look past all the little nonsense, not with an apathetic macho attitude, but with some understanding. Who knows how much understanding can change people from crazy to perfect?