I’m 30, and my older half sister is 36. Since I married my husband (32) in May, she has slowly cut contact with me. This hurts deeply because we were very close for nearly two decades. She stepped into a guiding role when I went no contact with my mother due to abuse, and she was always there for advice and support. We even had a daily group chat with another sister. But since the first day of my honeymoon, she hasn’t spoken to me.

It didn’t seem to be about my marriage. She always supported my relationship and believed we were truly in love. The trouble began after my wedding night when our gifts and a large envelope of cash were stolen. I asked my family about it, but responses were vague. When I pressed my sister, she shocked me by accusing my friends of being thieves.
I explained that vendors had unsupervised access to the property, which seemed more likely. She dismissed this, accused me of calling her child a liar, and then claimed multiple children and even she herself witnessed my friends stealing. She went further, saying my husband and I “have no real friends” and even attacked one bridesmaid with cruel words.
Her tone was unlike anything I’d ever heard from her. I cried, shaken, as she kept insisting my friends were “evil.” She then accused me of blaming our brother, who had struggled with addiction years ago but has since built a stable life. I never said that, yet she screamed that we were blaming him.
My husband stepped in, defending his groomsmen. She then involved her husband, who repeated the false claim that we accused our brother. Despite clarifying, the damage was done. I hoped she would apologize later, but instead she unfollowed me, deleted photos, removed me from our sister chat, and stopped sharing her location.
She even spread the story to our grandmother that I blamed our brother. I’ve maintained that I believe it was a vendor, not family. Nothing she alleged has been confirmed by photos, videos, or our trusted photographers. My dad has outdoor cameras, but despite repeated requests, he hasn’t shared the footage.
Months have passed. My birthday wishes to her children went unanswered for the first time. I fear she is going no contact, but I don’t understand why. I never accused family, only tried to explain what seemed most likely.
I don’t feel I should apologize for something I didn’t do. My friends live far away and don’t affect her life. Even if she disliked them, cutting me off feels extreme. I love her and her family, especially my nephews, and I’m scared we may never speak again.