I would also suggest that if your W is going to spend time at the house while you're away I would take any R books you have and hide them. If she sees them she would more than likely view them as pursuit.
The DB books are the LBS's "play books" so to speak. You do not want them falling into her hands as then she'll know what you're doing and it might not be as effective.
Make sure your computer is locked out, too. You don't want her to know about this site.
