'I can't trust her when she's lying to me. It's definitely not a test just now. She wants to fuck me,' Henry thought. But he knew better than to show his hostility towards Sarah. She still held power over the situation with their engagement and family power.
The only one who would explode was probably Marlon because he wanted Henry to marry Sarah so they could take over the duchy because they had no male heir.
'I don't give a damn at this point. He can do whatever. I'll protect Kate first in any way possible,' Henry thought. 'Maybe we can run away? No, maybe SHE can run away somewhere while I'm fighting for my life against my father.'
Sarah obviously knew that Henry was lying. There must be someone who told him what to do. Henry had always been a naive boy who acted tough.
He was free from any worry before James' death, and now that he threw himself into the fray, he would make many mistakes.