I wonder if her area of "expertise" is more dealing with couples and more of a therapist-type situation? If so, maybe directories (not sure if that is the right word) that deal with psychiatry, psychology, sexual dysfunction, etc.? Maybe do a search for those?
About.com has a plethora of different topics, but not sure if something like this would be "acceptable" to them.
It is an interesting situation.
Good luck!