My entitled sister in law insulted my disability for years so I didn't invite her to my wedding and exposed her on social media #viralvideo #viral #redditstories
OP's mom is literally insane, and it seems OP's sister is an exact copy of their mom. Guess craziness runs in the family but luckily doesn't affect all children. Good thing OP's dad and brother are on her side, otherwise it would have been way more difficult for OP.