I (36f) just got engaged to my better half (43m) two weeks ago.

My sister (28f) who has always been spoiled and coddled by my parents was dumped by her long term boyfriend for another woman after he graduated from medical school this past summer(she was looking forward to being a “doctor’s wife” thinking she’d be bathing in rubies and pearls) and proposed to her after only a few months. My sister is insanely jealous and competitive, she always has to be “first” and always has to “win.”

I expected she’d be jealous but grossly underestimated it, she was apparently so overcome with grief she had a nervous breakdown and had to be hospitalized and then move back home with my parents.

My parents have asked me to “keep a low profile”, have cancelled my engagement party that was their idea “until further notice” (probably forever) and to come alone to my mother’s birthday in a few weeks and leave my ring at home. (They love fiance so it’s not that they don’t approve of the relationship, this is to accommodate my sister).

I said we are now a package deal, and if he’s not welcome I’m not coming and I absolutely will not take off and hide my ring like some dirty little secret. And I told them they are uninvited from my wedding and we are going no contact until they tender a sincere apology and revoke this ridiculous rule of “keeping a low profile.” I also said if this standoff goes through the wedding we are going no contact for good. I’ve never missed a parents birthday so my dad is pissed at me, and I called.him a hypocrite because he went no contact with his parents for excluding my mother (over religious differences) he insists “this is different” and I said no it’s not because he’s expecting me to do something to my fiance that he’d never do to his wife.

AITA?