Awaiting return of CDs

Help! I'm trying to locate Penny, mom of three kids, who lives in Lake in the Hills and to whom I loaned a Kirk Martin CD set about calm parenting in March 2010.

I'd surely like to get the CD album back, so that I can loan it to other parents. I know she intended to return them when she borrowed them. With three kids, I'll bet she just got busy and put the CD album in the stack of programs "to listen to sometime." Maybe my card got just separated from the album.

Many thanks in advance to anyone who can help me get in touch with Penny!