Here's the Publisher's Weekly description of the book, since they can explain it much better than I can,
Feisty Marietta Greer changes her name to "Taylor" when her car runs out of gas in Taylorville, Ill. By the time she reaches Oklahoma, this strong-willed young Kentucky native with a quick tongue and an open mind is catapulted into a surprising new life. Taylor leaves home in a beat-up '55 Volkswagen bug, on her way to nowhere in particular, savoring her freedom. But when a forlorn Cherokee woman drops a baby in Taylor's passenger seat and asks her to take it, she does.I won't tell you any more about it, but I'll leave you with one line from the book,
"In a world as wrong as this one, all we can do is to make things as right as we can."