Not to mention, her current mode of existence was tightly bound to Gaven.
Put simply, even Virginia's gnolls in the Dragon Oak Territory might one day betray Gaven, the True Wraiths of Weizemay Manor would never be able to do so, just as the Heroic Spirits of a God Kingdom cannot betray their god.
He was the foundation of their continued existence; if he were to be no more, they would not escape disaster.
It wouldn't be an exaggeration to say that, especially after the birth of the Undead Divine Spark, Weizemay Manor had already taken on the embryonic form of a God Kingdom.
That is exactly why Gaven dared to let them know about the existence of the Undead Divine Spark—it would greatly motivate their fervor to strive.
Although it was not certain that they would get their hands on this Undead Divine Spark, even becoming a demigod and receiving divine rewards would allow them to transform into divine beings, obtaining a longer life span and stronger strength.