Hi,
this is a breathtakingly original concept! Beautifully made, striking ideas - and an incredible turn-on! To imagine the moment when you enter the duration, the locks clicking shut... and you know you'll just be standing there for so many hours... naked, vulnerable, helpless... and that's even without the gimmicks and the humorous malfunctions.
Here's a request: How about taking the Webcast option one step further and give viewers a vote, so they can add or subtract time for the girl? She'd have a display showing her the list scrolling down "User x: Add 10 min; user y: Sub 1 hr; user z: add 2 hrs", and so on, with current duration remaining also shown. The voting would be an optional feature, of course, that she has enabled herself, heart racing, mouth dry...
PS: What a pity this facility doesn't exist for real.