The One Million Dollar Week

This short story is about Avery, who is overjoyed when she gets her hands on a special lottory ticket and wins one million dollars. Obviously, it changes Avery's whole life, but that's not all. Strange things are happening. She feels like a lot of people know about the money, even though she hasn't told anyone about it. She constantly feels like she is being watched. A threatning letter follows and her friend disappears.
The money has its price, but how far will Avery go and what can she sacrifice?