The Queen is smart though off a little because she lacks knowledge and comprehension, she could only deduce so much. Only the Priest and MC closest aids know the truth. He’s like an apostle of the medicine god. I don’t get why he denies it when all the evidence is there. He possesses more influence then the Queen, he should at least set them to the right path.
The Queen is trying to appease the MC because if he ever asks for too much she can’t deny him. He’s already become something she can’t be without, she doesn’t want to ruin the connection with this vast treasure.
Honestly I think she could reward him with small gestures or gifts. All that matters is sincerity.