One way is to see the 'dickgirl' as a symbol of non - conforming gender roles. The mom in the story can be shown as a figure who accepts and celebrates her daughter's deviation from traditional femininity. For example, if the daughter likes to dress in a more masculine way or engage in male - dominated hobbies, the mom supports her wholeheartedly.
We could think of the 'dickgirl' as representing a girl with a lot of courage and independence. In the story, the mom could be guiding her daughter to use those qualities for good. Like the daughter wants to break barriers in a male - dominated field, and the mom is there to provide advice and emotional support, showing that family can be a great source of strength in such non - traditional pursuits.