It was all a misunderstanding on my part. My sister went out with her friend to watch a movie. i asked her "how did you like the movie", thinking it was black swan, but she watched Tron instead and she said, "it was good!" So the next day i wanted to discuss the movie, and i was like, "so you watched black swan right?" and she said, "i didn't watch that movie!" and knowing how she lies about things sometimes, I thought, wow she lied to me yesterday, so I instantly tell her the ending of Black Swan to get back at her. She ended up getting mad, we ended up smacking each other. But Since she really wanted to see this movie, she has stopped talking to me. I tried to say I'm sorry, I didn't know it was Tron you watched. I've apologized multiple times but she just gives me the silent treatment. It's been a week already! And now I'm pissed at the silent treatment. We're both adults. We live together, what should I do?