The demigod is trying to escape his fate not offend a god and die. So he spilled the information in hopes that the tree father will uphold his side of the bargain. He is weak so he can only hope that the one who is stronger than him will decide to be honorable. Such is the only option for the weak.
The queen's rising ego took a big hit when the demigod said that he would only speak with the god. Her ego stalled with the realization of her station. Demigod or not, she is still a mortal and cannot compare to a god.
'I am not even a free mortal. Wasn't I a mortal before I met this entity? Now I am a demigod and also a pawn. I have to become a transcendent and break my limits. Only then will I have my destiny in my hands."
