What steps can my girl friend take to remove a domestic violence warrant against me that was made while we were drunk?

I was in Arlington Texas at a bar. When my girlfriend was drunk and rain to the bathroom.like she was about to pass out. I ran in after her n she started to charge after me. In.the process she had a small bruise on her neck. She called the police. And they took a picture of the bruise. But did not press charges.. I was not there when the police arrived. What steps can we do to cancel the warrant out for me??