Because she has no evidence and he would call her crazy. (this was stated earlier) And he himself also thought about it. He recalled when she touched that stone that burned her finger but then he said that she was just imagining it. However even without her having to tell him, Hes already suspicious of her black magic antics but can't find any evidence or can do anything abt it because shes the wizard of the magic tower and they NEED to get married for the sake of the kingdom to balance out the imperial family power and the wizards tower.
Hahaha. Thank you for reminding me the reason why she doesn't want to tell him but she forgetting that he already thinks she's kinda crazy for asking him to marry her when she is suppose to be his hostage hahaha! So there really is not point in hiding the facts to avoid being called crazy when she already gives that impress anyways. I mean who in there right mind would ask there kidnapper to marry them hahaha
Can someone please tell me why she can't just tell the king what she knows? Of she just tells him what will actually happen when he marries the evil lady then they could come up with a better plan to counter her other then asking the king to marry her (which is not the best or even the most effective idea to prevent what will happen).
Somehow her knowing what will happen doesn't really serves its purpose because she can't even do anything but trouble so far. I hope she will be useful soon.