Thanks for the link.
It's a matter of interpretation, but I don't think she sounds carefree or joyous.
You can hear her sniffling a bit as she speaks. And although she chuckles at a few points, I think the laughter is just a nervous tic. And then there the long pauses where no one says anything, as if everyone including Caroline is just trying to process what has happened.
She's trying to let her employees know them the game is up and Alameda is going to be bankrupt. But I don't think they get it and they keep asking if the company has a viable way forward as a trading firm. There's a bit around the 45:50 mark where one of them asks Caroline if she has the "appetite" to make Alameda whole. She hesitatingly claims she does, but of course she knows (if they don't) that Alameda has no future because it has fraudulently stolen billions from FTX's customers.