(grand)Daddy comes home, see his daughter's face, remembers 'oh yeah, I have a granddaughter now, gotta be a granddad', and just finetuned his age like snap, no big deal.
Well He is that kind of spirit you CAN NOT lock in forever. sooner or later he will break out and dance on your corpse.. or outright eat you.
it is SO sweet he is asking for his granddaughter. that man knows what he likes.