Princess Veronica!
"So, she asked as a Wish from the Emperor when she gave birth to Our Crown Prince to conduct this Contest every year and grant a wish irrespective of the person's identity and status. But Our Emperor granted the wish only when Our Princes grown capable enough to ride the horse though".
Hearing him, she actually finds him useful this time but her dislike still exists for him. Maybe the reality hurt her in someway. That Christopher should have been alive like him too. He didn't deserve to die for a small assault. It was wrong but surely not wrong enough to deserve death.
Moreover, He knows better than Sarah when it comes to past incidents before Sarah came here as a servant. And she doesn't even need to ask him anything! He just tells me everything on his own!
'Who knows as long as I pretend disinterested he might tell more to make me speak? This sounds like a good idea and it is working for me'.
Because if she asks a single question he answers more!