I'm Sorry

I woke up to the feeling of a cold blade on my neck. I timidly opened my eyes, only to see that there was nothing there. Shaking it off, I made myself a bowl of cornflakes with sugar. Whispers echoed through the apartment. They said, "Selina, we're here. Join us." 'Okay' I thought to myself. 'This is creeping me out majorly.' I crept round the apartment, carefully inspecting each room. Just as I finished, the doorbell rang. I ran to answer it. There stood a man dressed as a clown. He handed me a parcel. "Your parcel, ma'am." He said, in a petrified voice but the smile staying plastered to his face. "B-But I didn't order anything." I replied, looking down at the parcel in my arms. When I looked up, he'd gone. 'Strange.' I thought. I tore open the wrapping and jumped out of my skin. You know those chattering teeth? Well, they jumped out at me. There was also a note.
'Selina.' It read.
'You didn't join us before. Your chance has gone. Meet us at the pier at 11pm, or it'll get messy.'
'No.' I said to myself.
I called my university, pretending to be sick. I lounged around all day, forgetting about the morning. When it came to 9pm, I fell into a deep and comfortable sleep on the sofa. At 11:30pm, I suddenly felt a searing pain in my stomach. I had one thought then. I was sorry. Then I felt myself wasting away, thinking 'why did it have to be me, put under this cruel spell?'. I closed my eyes for the final time, hoping for a better life.