I'm also a gang rape survivor. I've done volunteer work and I often speak openly about my assault, but sometimes I choose not to. I've given a survivor speech for trainees at a rape crisis center several times, but I never wanted to (and never did) speak at a Take Back the Night rally. You don't have to do everything. Do what you feel is best for you, and this can change with time. There are lots of ways to speak out, to educate. Also, I didn't pursue legal recourse. I didn't care. I didn't have the energy. I just wanted counseling. I admire those who do seek justice, but I don't regret that I never did.
There are many survivors with many different strengths. You are brave, you can be both brave and take care of yourself. You should be incredibly proud to have written such an inspirational piece.