Mercy shook her head. "I can follow it." She'd asked a few questions when he'd gone over it, and had a basic idea. "I see you made the changes I suggested." She leaned over the engine. "It won't be hard to work on this. And I've got the time."

A smile over her shoulder. She caught the faintest whiff of that magic around him. It bothered her, but she couldn't ask without giving herself away. "Don't worry. This is something new, but what's life without a challenge?"