I guess if her character is basically just a psycho hosebeast, yes, that's realistic. But it just rang false for me for her to go RIGHT into that mindset. There'd be far more impact if we saw who she REALLY was first, and saw how much she was hiding her anger, but we don't get that. She just MELTS DOWN the second he shows up. By far, the weak point of the film's structure and writing.
And that's another point. Their father/daughter "issues" are thin, at best, and could have been written by a 12 year old. "You were never there! You don't know my birthday!" While these are real issues, they are not deep or particularly interesting ones. There is no real motivation beyond the basic "You weren't there for me, and I'm mad about it". Unless we're supposed to feel bad that she became a lesbian or something over it (which I don't). Hell, Jim Carrey's absent father in LIAR, LIAR had better development in that regard.