We don’t really know who her father even was though to be honest. At least we have a name now due to an interaction line, that can get those people who were saying that Jack or Gabriel was her father to shut up. But we still don’t have a face to the name.
- Pharah : Mum, don’t you think it’s time you told Sam you’re alive?
- Ana : You let me worry about what your father needs to know.
So her fathers name was “Sam” apparently. But we don’t really know who Sam is in the flesh. Considering Pharah called her father by first name instead of dad, could easily suggest that she has no relationship with him and certainly isn’t close to him. Possibly resenting him for something.