Soverick groaned and said, "I might have been wrong. Mother High Heaven contacting us is not the darkness we should be afraid of. It is what she contacted us for that is the true cause for fear."
The smart thing for them is to have never broached this topic with Mother High Heaven at all. Fighting and killing the realm lord is something they plan to do, but it is going to be later in the future. It is not something to consider while their lives are already precarious and they are being hunted by world gods everywhere.
At this point, they are not thinking about the rewards at all. They are already thinking of the consequences of failing. If the realm lord catches a whiff of them scheming against him, all he needs to do is broadcast their position to the world gods searching for them. It will be easy to do for him since he was able to find them easily earlier.