My (younger) sister-in-law

Maranda
I sat with my sister-in-law today at the hospital while she had a rape kit done. I hate that I wasn't there to stop it. I went through the same thing (minus doing the report and the rape kit) and always wanted better for every girl I know. I hate that this happened to her too. I'm worried about her going into the same place I was when it happened to me. I was in a very very dark place. 
How do I help her? What should I not say? Idk what to do. It was so much different when it was me going through it. 
I feel lost.