Of course no-one sets up cameras for a multi-room stage - that was clearly bollocks and she clearly didn't know they were there when she started the thread.
Everyone has to go on their gut feelings on here and people's guts tell them different things.
My gut feeling is that the she was genuine and on the update she'd swallowed her husband's total bullshit - which is exactly what I was expecting her to do.
From comments early in the thread it was clear that he had already had a tendency to gaslight her - she said he would insist things so strongly she would doubt herself; and when she started defending him saying he was a good husband and father, I knew exactly how the thread would go...
She would confront him, he would lie his face off, she would doubt herself, swallow his story and life would go on.
I reckon he likely set up cameras on the sly, at some point they genuinely did film dd prancing about, probably on some normal camera, & he claimed that's when 'they' had put the cameras up. 'Don't you remember you helped me?', 'I just forgot to take them down again', yadda yadda.
The reason there's no other surveillance footage on the SD card is that he only saved that file to it - for his own pleasure and also presumably to send to an amateur site, hence the 'free footage' label. There's an awful lot of it about.
What troll who has everyone believing their story returns and contradicts everything they've said the day before? They would just let it run and play to the gallery.
It would be great if it had all been invented, but sadly I think it was probably true.