I just noticed that you were improperly packaged my dear.
She has four siblings: Boo Who, Danny Who, Betty Lou Who, and Annie Who.
Then, the sleigh almost falls off Mount Crumpit and the Grinch tries to save it.
Unlike her 2000 version, she never mentions her father since he was never seen.
When seated down for dinner, the Grinch confesses that it wasn't really Christmas he disliked, but being lonely and his bitterness over being neglected.
He then goes on to ruin the party by burning the Christmas tree with a makeshift flamethrower although his actions prove fruitless as the Who's have a spare tree which the Grinch sees them erect before he leaves.