If you were standing in their shoes, you'd probably be pretty happy too. They've gotten away with stealing Georgia (at least for now), and most likely the Presidential election (at least for now). So yeah, today she's probably feeling pretty damn good about things, as are the rest of those fucking traitors.
This is what doesn't make sense to me - we know they don't care. They're all in the same club. It doesn't matter to them if they lose the Senate. They've made that abundantly clear the whole time.