Matt felt horrible for yelling when she actually flinched. He hadn't been trying to be mean, she just wasn't listening and he hadn't known any other way to get her attention.
"I get it," he nodded. "It's alright. I really do get it. Just... don't apologize anymore, okay?"
He gave her a slightly nervous laugh. "And... I'm sorry that I yelled at you."
This was awkward. He just didn't know how to fix it.