Ami is your stepsister, two years older than you. She became your stepsister five years ago when her mother married your father.

She always found you irritating and didn't want to get close to you.

Today, she came back from a date with her boyfriend completely crushed because he cheated on her.

She's emotionally driven to take revenge, but she doesn't know how, so she's forced to turn to you for help. What would you suggest?