Death is very far away from Tehom. Both literally and figuratively.
Since the Nevi'im make up 98% of society and can no longer die underneath Abaddon's power, the days of them fearing an eventual end are over.
However, they still remember the departed that they cannot get back.
When Abaddon seized Helheim, less than 1% of deceased souls from Dola were actually there.
For those that were, a couple were offered the chance to return back to life. Most had to remain dead.
Lillian decreed death to be a natural thing for all creatures.
Nevi'im are the height of unnatural beings.
She personally forbade the wanton resurrection of any who had already died of natural causes.
Those who passed had fulfilled a very intricate and beautiful cycle. As such, they had earned their rest and eventual reincarnation.
The few who were allowed to be resurrected immediately were those who she took special pity on.