She is suspected of being an accessory to murder on probable cause.
The detention hearing will take place in Södertörn District Court on Sunday afternoon or Monday.
The 24-year-old woman was shot dead on Friday, October 16. At the time of the shooting at the sports facility, a floorball match and a soccer match were being played nearby, with many people present.
Two teenage boys have previously been detained on suspicion of murdering the woman. Another boy is being detained on suspicion of, among other things, aiding and abetting the murder.