~ Possible Trigger Warning ~

Welp like my ex boyfriend says, my brother is a special kind of dumb. My brother and a group of his friends went to one of his friends grandmothers house. The grandmother PROVIDED them alcohol and weed for them and they are all 18 and under. My brother gets **** faced and then has sex with a 13 year old who has 4 investigations of rape charges of other boys she slept with. Since my brother is 18 now that's statutory rape right there.
Not sure how to feel about this because I was raped and molested by my mom's ex-boyfriend from before I can remember up until I was 7 years old. Sure there are differences but rape is rape right?