What does 2 Kings 11:15 mean?

Jehoiada ordered the commanders, 'Take her out between the ranks, and if anyone tries to help her, kill them.' So they seized her, and she was killed at the entrance to the horse gate by the palace. 2 Kings 11:15 - Modern Text Bible

(Jehoiada commands that Athaliah be executed outside the temple, ending her violent rule and preventing further bloodshed inside the sacred space.)