<human>: Give me the gist of the text in a nutshell

I don't even know where to begin. I guess I'll start by giving you a little background info. So, my ex-girlfriend and I have been dating for about 2 years. 2 months ago, we moved into an apartment together. After about a week, we started arguing. After about a month, it turned into physical abuse. She would start hitting me, screaming at me, and I couldn't do anything about it. 

Last night, I decided I have had enough. I packed all my things, and tried to leave. She stepped in front of the door, knife in hand, blocking the only exit. I was scared shitless, I was crying, I was screaming, I thought I has going to die. I don't know what came over me, but I shoved her out of the way with all my strength, and ran out of the apartment. I got into my car, and drove away.

She called me this morning, saying how she broke her ankle after I pushed her, and how she is 'sorry'. I am scared, what if she calls the cops on me? What if she sues me? It is basically her word against mine. I'm currently seeking refuge at a friends house. 

Please help me, Reddit.
<bot>: Had a fight with my girlfriend. She pulled a knife on me, I pushed her and she broke her ankle, now I'm not sure what to do.