Firstly I'm really sorry to hear about this, and I know exatly how it feels, makes you feel hopeless and powerless. I have been very lucky regarding this recently, but I got mugged twice when I was only 10 and then again by the same scumbag when I was 12, via knife to the throat both times. It made me a much stronger person, lets put it that way! the trauma of these incident left me paralysed with fear, so much so that I barely talked for years and years, in fact music is the only thing that saved me through my teenage years!!! I did finally get over it, but it caused a chain reaction of fear, you really should read 'Feal The Fear and Do It Anyway' by Susan Jeffers, incredible book, especially in hard times.
Life can be incredibly difficult at times!