AITA for changing the locks after my parents tried to give my house to my sister?

At my parents’ anniversary dinner, my father raised a glass to my sister’s “fresh start” in the house I owned. I had never agreed to let her move into it. I stayed quiet while she booked movers, changed her address, and planned where to put her furniture. On moving day, she arrived to find new locks, a legal notice, and my new tenant holding the keys. ---------------🦦Otter Stories🦦--------------- #reddit #stories #redditstories