The special chastity cage was entirely your Cuckysitter's idea. She told your Wife that it would give her more control while She was gone for extended periods. Of course, this means you have a new sadistic Keyholder, now.
She had been working there for a full year and had cared for quite a number of subjects, all of whom had actually volunteered for the treatments, all of whom were taken well beyond any limits they thought might be imposed.