The only successful selling women specific rod that I am aware of is the Winston "Joan Wulff special". The grip on that rod has a thumb indent.

Truthfully I have been teaching flyfishing to both men and women for a long time and I have never had any problems with a women using a rod that was not specifically designed for them.

In fact in my experience most women that I have taught or guided tend to listen better and learn more quickly then their male counterparts. And they usually catch the most fish.

Rob