Family dramas are always tough and delicate situations that need to be dealt with carefully. But sometimes a girl's gotta do what a girl's gotta do.

This is the case with this story which involves an extremely toxic sister-in-law who presents a potent mix of infantile gatekeeping and demeaning slander, which Redditors agree has to be dealt with exactly like the young woman who posted it did.

The original poster (OP) of the story is a young woman, who clashed with her boyfriend's sister Sally. Sally mocked OP and made mean comments about her looks and mental health.

When OP told her boyfriend, he immediately backed her up, and together they decided to uninvite Sally for Christmas, which caused a big family fight. OP's family supports her, but her boyfriend's parents think she's overreacting.

It's a tough situation that mixes family drama with personal boundaries but also an encouraging one that shows the power of loving, supportive partners and OP's bravery in standing up for herself against mistreatment, even when it meant going against family expectations.