Not yet. Still working on it. She's one of those ladies where the gradual approach is the best bet.
Does the book come up on Amazon? Sometimes they can do surprisingly well when it comes to finding out-of-print titles. In addition, try calling some of your local "used and rare" bookshops (should be in the yellow pages, probably under "Books - Used and Rare"), as they may be able to point you in the right direction; they specialize in developing contacts to find stuff like this. I've also had some luck with this site in the past, when I was trying to find some old titles:
http://www.powells.com
Good luck!