You seem very upset about what is essentially a no-lose situation. Look at it this way. There's 2 potential scenarios here.
1: She read the thread, put the pieces together and is now thoroughly creeped out by you and the brother in law, in which case I see years of awkward handshakes and suspicious glares in your future.
2: a) She saw the thread and is in fact some kind of kinky cumslut who is looking forward to blessing your non-existent camera with copious amounts of nudie jacuzzi action.
or
b) She didn't see the thread, but being a kinky cumslut anyway, nudie jacuzzi action is still high on her to-do list.
Given scenario 1, you're already busted and likely can never repair your now fractured relationship. Might as well set up the camera anyway in the event that she assumes that you wouldn't dare be so brash as to go through with the plan, and subsequently decides to bring her waterproof crotchthrottler in the, um..kiddie pool with her.
Scenario 2 being true, again its a no brainer to set up the camera, cancel your plans on babysitting night (have a good alibi lined up though..buy a ticket to some cerebral art-house flick..or any film that doesn't scream "voyeuristic pervert"), pick up a pony keg of Astroglide on your way back from the theater and make like a caged gorilla while she sheds her..inhibitions..on your spycam of looovveee. Then PM me the feed for a thorough security screening.
Do it man. For your country.
