Plea agreement reached for Anissa Weier in Slender Man case

----- Anissa Weier will still go to trial next month. If the jury finds her not guilty by reason of mental disease or defect, she would not get to ask for conditional release from the state mental hospital until July 2020. But if the jury finds her guilty, Weier could face 10 years in prison and 10 years of extended supervision. The judge made it clear to Weier that he is not required to follow the state's recommendations. The maximum penalty is 35 years. 

WAUKESHA, Wis. (CBS 58) – One of the two girls accused of stabbing her friend because of the fictional character Slender Man appeared in Waukesha County Court Monday morning.

15-year-old Anissa Weier appeared for a status conference. The judge agreed to amend her charge from attempted first degree intentional homicide to Second Degree.

Because of the guilty plea, when she goes to trial on September 11, the jury will only have to determine if she is not guilty because of mental disease or defect.

Weier faces a maximum sentence of 35 years.

Her accomplice, Morgan Geyser, is accused of Attempted First Degree Homicide in this case. She appeared for a status hearing Monday afternoon.

They will be back in court for jury instruction in September.

Stay with CBS 58 News for more live coverage and information on this developing story.