I would love to have a pair of carbon-soled shoes, but haven't found one yet that works with my finicky feet. I need a wide toe-box and a narrower heel, so the search continues for a carbon shoe that suits my needs.
Have you tried Specialized's women's shoes? I'm not sure if I have a narrow heel or not, but my toes love the wider toe box (and the fact that their carbon sole shoes go small enough)
"Sharing the road means getting along, not getting ahead" - 1994 Washington State Driver's Guide