Common assault charges against me

A common assault case had been opened against me where a girl aggressed me inba braai private property by puting weight on my left side and therefore pulling on my hair i asked 3 times for her to move to a vacant chair as she was hurting me and she refused i than reteliated and also pulled her hair where and dual altercation started before the people in the hour disolved the situation, i took my car keys attempted to leave but was stopped i than attempted to leave by foot also stopped by my partner and brothers at the scene. Now the girl says i attacked her and removed some of her hair from the roots and opened a common assault case and apparently i have to make my first appearance before i open a counter charge according to mondeor police station. What must i expect, how are things looking like for me