These Are Your First Steps
Serenity's theft of his pendant struck a nerve. He knew the significance her lightsaber had to her. It was the same for that pendant. His first inclination was to seize her with the force, hold her in place and take back what was rightfully his.
Instead he pulled her lightsaber from his belt and held it aloft in front of her face. "This is the weapon of a jedi, not a child's toy. And you, Serenity, are a child. Taking my pendant proved that to me. You won't get this back until you grow up. Lesson one."
He put the lightsaber back into his belt.
"I will take care of it, I promise, so long as you take care of that pendant... you're not the only one with mementos..."