First of all, congratulations on getting out of a toxic relationship, that take s a lot of strength. That said, you should not be applying to medical school until you are ready to put your best foot forward. This is a very long, emotionally and physically draining, and expensive process. It sounds like you need to take some time to build up your application and be in a secure place to apply. The worst thing you can do for your application is apply with a poorly constructed application and have to re-apply. What year are you? Have you considered taking time off? Have you considered talking to your pre-med committee and asking how you might build a successful application with their help?
You will ultimately explain your situation in your personal statement where you will talk about what lessons you have learned from your life experiences and how you will use those lessons to reach out to patients in the future. In the mean time, maybe you can capitalize on your experiences and volunteer at women's resource centers where you can help others escape difficult home situations.