After losing re-election to the Bundestag in 2021, Winkemann returned to her previous position as a judge in the Berlin regional court.

On 7 December 2022, she was arrested during a large-scale raid against an alleged right-wing terrorist association with roots stemming from within the Reichsbürger movement.

[7] In the morning of 7 December 2022, she was arrested for her alleged involvement with a group of right-wing extremists connected to the Reichsbürger movement, which had planned a coup against the German government.

[14] The Public Prosecutor General (GBA) accuses Malsack-Winkeman, among other things, of having infiltrated other defendants into the Bundestag and scouting out the buildings with them.

According to the GBA, the group planned an armed storming of the Bundestag in order to arrest members of parliament and bring about a system overthrow.