My Step-Sister Has a Secret

Jamie and I have been getting on each other's nerves ever since our parents tied the knot. There's always tension between us, especially when I catch her in the act of doing chores. I can tell she's a troublesome girl.
Later that day, while I was using the restroom, I stumbled upon a discarded pregnancy test. It was clear that Jamie was the owner, and now I have some leverage to use against her. After a melodramatic confrontation, I see the despair in her eyes as she realizes the consequences this secret could have on her mother.
She's at my mercy now, vulnerable and willing to do whatever it takes to keep me silent. It seems like she's given me the upper hand, and I fully intend to take advantage of the situation.