Having experianced violence at home, first with my mum and dad, and then even worse with my mum and "stepdad" (great job he did), I have a fairly good idea of what you must be feeling right now. From my experiance all I can say is that it is something that time heels more than anything you can do right now. Just focus on looking after the people you care about and hopefully they will do the same for you.
Stay strong, but don't feel as though it is up to you to sort everything out.