AITAH for telling my mother on my sister?
TW: ABUSE!
I (15M) used to live in a home with my mother (42F) and my sister (19F). My sister has a boyfriend who is just as old as my mother. (38M) This man, has no life goals, aspirations, or values aside from running the streets as well as being homeless and being a hoodlum. My mother has set clear boundaries with my sister that she doesn’t want that man in her house, and she refuses to respect that boundary. She has clothed that man, fed that man, and cleaned that man, all in my mothers home without giving her any sort of payment or notice, and with all of that assistance to him, he treats her like shit. He beats on her, he disrespects her, and when she tries to leave he doesn’t let her, to the point where he has broken her window with a rock, twice. Recently, my sister got a restraining order on him, and I thought it was the last we’d see of him, Nope, not my sister. She willingly brought him back into my mother’s home, and I’m sick of it. So I told my mother, who is just as fed up. My mother isn’t home, as she’s on vacation in Florida, but I pray something happens to prevent that vile man from going anywhere near my maternal family.
So, am I the asshole?