
Like "this is a secret but I need to let out blood every month(? Dont remember exactly) and the people who drinks it levels up in power, thats why the bayans suddenly thrive again cause all this time they were drinking the blood I shed behind my back" and he be like "it seems they really need to die soon.. I agree, I will help you with your revenge" XD
Cause if you really want to hide it from her you would have thought to order the servants to keep an eye on her while you torture the spies or at least barred the door/hallway