Well, my wife doesn't have the support of other women in her situation. One of her complaints when we were in counseling diagnostics was that all the information she'd seen so far was from men. She wanted to see what women had to say..
Why not copy and paste posts you find here to a word processor file and print it out for your W's benefit.
Find articles about W's that feel like your W does and that have lower drive H.
Tryingtoholdon's last post could be included and you could say you learned something from her posts that would help you to understand your W's feelings a little more.
Of course your W might say it is all BS and not want to hear anything now. You are in the R and I am not but I think it might give her some understanding to see what other women want that want their man to be more involved in the marital relationship more than they are because of different sex drives.