Left alone, unable to endure the trickling sweat, the itching rubber and full bladder any longer, she thrashes and thrashes, screaming as loud as she can into the gag, and the humans do not even notice her soft growling and purring. The household continues, the work, the play, the cleaning, and they barely take notice of the depths of frustration and rage of the house pet.
How about we add a month to your lockup for every drop of my piss that you spill? Gives you at least a good year of urinal practice in chastity to look forward to.