I'm 19 and my sister is 25. My sister is extremely vindictive and she gets it from my mom.

My mom is very into getting revenge on shitty men. No matter how harsh the revenge is. My sister had a miscarriage back in August so she's been struggling and found out her boyfriend has been cheating on her. He even cheated in her car. It's all fucked up and he didn't know my sister knew because she was plotting her revenge and my mom was helping.

Trigger warning but my sister's revenge was going to be to take him out for drinks to celebrate their "love". Drug him. Have another man have sex with him while he's drugged out and then steal his clothes so he will be forced to walk home with no clothes and then see all his stuff outside. And my mom was in full support of it because he shouldn't have cheated on his girlfriend going through a miscarriage. My sister has also done this before. She was 18 and found out her high school boyfriend was cheating on her and pulled the same thing just differently. I was only 12 at the time so there was nothing I could do. I

told my sister this was an awful idea and she got away with it the first time. She may not this time. She wouldn't change her mind. I went to the club they to and tried to talk her out of it and she told me to go home. I almost did but when they were sitting I went back and slapped his drink out of his hand and said "She knows you cheated" My sister and my mom are both upset I betrayed my sister. We all love together and I'm being ignored and given the silent treatment. I feel like I should go live with my dad and stepmom because everyone hates me for putting a shitty cheating man before my blood sis...

@Moriah I get that. I'm just a victim of rape and I feel standing by if I can stop it just felt wrong.