Police charged me with domestic battery even though all I did was hold my gf wrists so she wouldnt scratch my face, push her away when she was biting me and restrain her.Picture shows her nose slightly marked from me pushing her away.

I have pictures and an ER report for stitches I recieved from a previous altercation that I was advised to preserve if anything nasty happened in the future. Prosecutor has to prove beyond a reasonable doubt I did commit battery. Do You think previous acts of violence by her will create sufficient doubt?