For some writers appearing on a best-seller list is more than could ever be hoped for. For others, earning enough just to keep on writing is quite good enough. And then there is a great and grand group somewhere in between.

There is one author, however, who stands distinctly above the pack. And when the description at the top of her website reads: Outsold only by the Bible and William Shakespeare…, you know she’s got to be pretty good. Pretty good to the tune of an estimated 2-4 billion....