At the Cleveland Motorcycle Show this weekend, I found out about a link designed to help women riding to the conference link up if they need a group to ride with, or be in the near vicinity:
www.womenridersnow.com.
On the left, under the Women's Conference menu, is a link called conference connections. People looking for ride companions are posting there.
They (women at various women rider booths) are concerned about attendance, both because of the economy and the time commitment. There will be "fly and ride" available, so that people can fly to Denver and rent bikes for the conference. (Hopefully, more than just EagleRider.com, which is all I see at the moment.)