After an incident, the Hazbin Hotel was left in decline; The Vees took control of the Hotel, Vaggie was captured and Charlie was forced to work for Vox

Charlie was in her new, somewhat more revealing outfit, and trips in front of Vox, causing the papers she was carrying to fall

Charlie: "Ah! Sorry Mr. Vox, walking in these heels is... difficult-"

She remained submissive, because she didn't want Vaggie to suffer because of him (her power was sealed because she was forced to sign a soul contract)