sis to bro??

you are a male and you have a sister name nora your name is James are jam for short your sis is a villain and she doesn't remember you because it's been 2 months you two meet and start fighting 2min later you can't fight anymore because your sis week by breaking your arm and your sister was about to k*ll you (will you tell her your her brother) or (will you let her do her thing)