To expand a bit more on what
@Abroad said: She could have spent her whole life in Detroit, a very large city, with a large network of public transportation. As a result she may not know how to drive a car and even if she does she could easily not have one to drive. Why would she need it, there's buses and taxis and that it Detroit.
The country doesn't have public transportation like a city. Many communities have no public transportation and others have such a small system that it only serves a very small portion of the county's population.
And, those crappy small town jobs aren't that easy to find anymore. Where I live (in Pennsylvania) our unemployment rate is insane. We have next to no need to white collar workers, those jobs have long since been taken, and our blue collar jobs are dwindling. I don't know her education, but many desirable degrees don't mean shit out in the country. There aren't a lot of fast food restaurants, grocery stores or convenience stores so those types of jobs are minimal and when there is an opening there are lots and lots of applications for 1 or 2 positions. Our factories have been gone forever, one or two are left, but again you need to drive to be able to get there.
Now, don't get me wrong, I love living in the country, I wouldn't have it any other way. I've tried cities and I'm a fish out of water. But I was raised to be able to live in the country. I got a license at 16, have always had a car and while I have a college degree, I also have a ton of country practical skills that landed me my current job. I was taught to fix cars, trucks, lawn mowers, and that got me my job in a Powersports dealership.