Curate, connect, and discover
There are not enough aus where Frostbite adopts Danny.
Frostbite comes to the realisation that the great one who defeated Parish Dark is a neglected child and goes 'well that won't do'. Maybe Danny has to leave the living world and Frostbite's tribe takes him in. Danny gets a clan and a whole tribe of people as a support network and a stable environment to feel safe in. Maybe he even manages to finish his schooling!
Maybe the Observants try to have Danny thrust onto the throne because they think he'll be easy to manipulate if they force him into unprepared and tear him from his haunt. Danny is panicking and so the Far Frozen are like. Well :) according to the law of the Far Frozen realm and customs of the tribe that the child is a ward of, Danny is still a minor until his coming of age ceremony in about fifty years or so, so until then :) the Observants council would never violate Far Frozen law like that, would they? :|
Thus Danny is free to live his life and maybe find a new candidate in the meantime.