I feel like she would have been super paranoid to be driving anywhere super late because she didn't have a drivers license. Not only did she not have a license, hers was suspended. I don't think she would have went far just for that simple reason. If she were to get pulled over she very well could have went to jail. My thought is that she took the freeway. I don't know how the freeway is in Wichita but in Topeka there are hardly ever any police officers, highway patrol, sheriffs, etc. If not the freeway, back roads she was comfortable with.
But that is entirely going against her being arrogant about getting caught. If she was that cocky, any type of flat surface she could drive on legally would be fair game.