If I may add my perspective here I'd like to point out that the "father role" is quite apt in that it is an example of a sort of traditional authority figure most girls learn to follow from the very beginning of their lives, and perhaps for Dax9 "father" suits his personality but the same role is played out many times as little girls grow up.
The older brother and his friends, the handsome teacher, the dashing police man, the boss at work etc.
Usually these become nothing more than fantasies.

Until a man who knows either learned or by instinct that some girls (or ladies or women) are quite willing follow if he is capable of leading her in that way.