The victim, Andrew Boldt, was from West Bend.
Her police mug shot shows her wearing fake blood and cuts on her face.
The shooting happened Tuesday evening in Milwaukee.
Investigators say they found a large knife and the teen’s phone at the scene. And on the phone was a photo of the suspect.
A 29-year-old man who was intoxicated came home and started cooking. His 39-year-old brother confronted him and was stabbed Tuesday night.
The Brown County Sheriff’s Department says it is spending more time on cases like this.
Tyler Jochman, 19, was accused of sexually assaulting two girls, ages 15 and 17, at his apartment.
Prokopovitz was last seen at her Pittsfield home April 25, 2013.
No trial date was set. He returns to court Nov. 5 for a status conference, according to online court records.
Investigators say three men were seen near a stabber on Friday night.