It was really quite alright that she didn't glance up at him, not even once. Lukas was more than familiar with relying on watching people. Even if he wasn't entirely aware that the magnification of his focus might might be uncomfortable for strangers, he knew that most people were able to use more than just their eyes to get a feel for a situation.
Dropping the nailbed of his chin into the open grave of his cusped palm, Lukas watched her words form in graphite. In his debt forever, was that so? A wink aimed at nothing in particular was his only reply, sincere enough to function as a blood promise in any court of law.
And don't worry, he missed the girl's smile by a mile, because some peripheral movement functioned as a distraction when a grilled cheese platter was slapped into the diner's aluminum kitchen window.