AITA for walking away from my sister-in-law’s insults and cutting off her financial support?

I went to my cabin to rest, but my sister-in-law was already inside with her family. She screamed at me, “What is this leech doing here? Get out now.” I smiled and said, “Okay, I’m leaving.” But as I walked out, I canceled the check worth thousands of dollars I had been giving her, and I made sure she felt the consequences. ---------------🦦Otter Stories🦦--------------- #reddit #stories #redditstories