Answers

Slap!

With his skilled reflexes, Emery unconsciously caught Gwen's arm midair, stopping her attack. The situation had instantly turned more awkward, with him clutching the princess' arm tightly and being in such close proximity to her. 

Why are you hitting me?! Those were the first words that came to mind, but his intuition told him there had to be a reason behind this, as he could practically feel Gwen's emotions bubbling behind the surface. 

The princess looked to be in a raging tantrum, but standing this close to her, Emery saw tears reflected in her eyes. She pulled herself away from his grasp in a forceful motion.

"You…!" Her anger was so visceral she could just barely choke out her words. "Why did you lie to me?! Lanzo! Emery! Merlin! Who are you, really?!"

It appeared she had been repressing these questions for a long time and was now finally able to hurl them back at him with seething venom.