Dean's confirmation that her car could indeed do with filling up made Mika nod. It wasn't surprising in some ways as it had been a few days since shhe last needed to and she had done a fair bit of driving. She would have been more surprised if her car didn't need filling up all things considered.

At the gas station, she sighed actually glad for the stop as it meant before she got in the driving seat, she could stretch her legs and grab a drink and snack. She listened to what he said and gav ehim a reassuring but warm smile whilst nodding, "I will I promise."she stretched her hand over and gave his a squeeze, "I'll be even more careful than I normally am and won't stray too far from you" she promised him. She knew he knew she would be very reluctant to leave him if he told her to run, just as she knew he wouldn't want to leave her either. Simple hunts may usually come up with some kind complication or curveball, but that didn't mean she was going to just up and leave Dean to fend for himself or vice versa. 

Letting go of his hand, she got out of her side when he did, grabbing her wallet in the process. "I'm gonna grab some snacks and a drink, you want anything? My treat" she asked him, walking round the car to get to the store front.