My coworker has very generously agreed to drive me home after work on nights we both close (I don't wanna walk home at 1 am). She insisted I don't pay her, but you know, I insist that I do. The only thing is I have no idea how much to give her. I live about a mile from our job so she's driving me maybe a total of 5 miles a week (we work together ~4 nights a week), and she lives maybe 3 miles from work herself. How much would you give her a week/month, TQC?