Finished Running

Well, I finished reading Ann Patchett's Run a few days ago. I really enjoyed it, but I did wonder what Ann Patchett's relationship to adoption is. In the interview with Patchett at the back of my book, she says nothing about adoption, but emphasizes that in all her books she writes about people who don't know each other being thrown together in a situation, which would definitely describe the setting of both Patchett's Bel Canto and the maternity home situation in her Patron Saint of Liars. Still, I can't help wondering what her fascination with adoption is...

Did anyone sleuth anything out about this?