My sister was sexually assaulted last year in sixth form. The guy is her age (18). I know where he lives but he has a lot of ‘backing’ In his family and I have nobody. I.e. if they found out it was related my sister, they would escalate it with my wider family, which is a risk I can’t take as my partner is pregnant and lives with us. I also have a career in law, which makes it extra risky. I found out today and my heart is broken. Please help.

Edit: thank you to everybody who has commented or messaged privately with support. You guys are better than some people I thought were my so called friends.