Better is how she spends the scene matter of factly discussing domination and even slapping a guy with her whip.
Of course, Hannigan was happy to arrive as his plus-one for the big event this time, especially since she's always of her work when she as a nominee.
She had her darker moments, even close to destroying the world but redeeming herself in the end.
Seemingly killed in the season three finale, she was brought back as a vampire who was little more than an annoyance to the gang due to her stupidity.