I think she placed a foolish bet that the Jan 6th committee would be seen as a group of super patriots by the majority of Americans, and that the hearings themselves would be a monumental moment in history, akin to the Nuremberg trials, and not something that was barely paid attention to, and will be forgotten as soon as it ends.
She fell for the hype being whispered in her ears in her inner circle, and didn't stop to smell the roses. In fairness, a LOT of republicans hedged their bets in the same way immediately following Jan 6th, and were all "Oh' my goodness gracious! This can not stand!", but smartened up days later when they realized how little people cared. She hung on to the dream, and will be a mere footnote in history because of it. One day it will hit her that she was nothing more than a tool. That realization will likely come, when she tries to nab jobs on "The View" and such, and she's told to kick rocks and reminded that she's a Cheney, and not a Pelosi.
Dumb broad.