Trek has a new line of women's saddles, the widest is a fairly decent width (160mm, so it would fully support someone whose sit bone measurement is about 140-145mm, and slightly squish someone nearer a 160mm span.)

Lightly padded, which is always good. Channel down the nose, which may or may not be enough. (less padding tends to require less removal/cutout)

http://trekdg.com/itemdetails.cfm?ID=1649

This saddle was designed to support the rider along the ishial rami more than just on the ischial tuberosities. (so supposedly someone who's actual sits are wider than 160mm should still be able to use it) I've asked for a sample saddle to test for our pelvic rehab program, but haven't heard much from Trek, other than a nice email saying they'll get back to me soon.

I do know from my own experience with other saddles that weightbearing on the rami is very painful for me and I do better on the tuberosities themselves (the actual sit bones), so I'm very interested in seeing if my 170-180mm pelvis will survive on a 160mm saddle.

Imagine your sit bones are a "W". The two bottom points of the "W" are your ischial tuberosities. The inner upsidedown "V" between those points are the rami. Your soft tissue is located in that inner upside-down "V". So I would imagine that someone with soft tissue squish problems might be uncomfortable resting in the "v" between the tuberosities, as that soft tissue that's already in there has to give to get the rami in contact with the saddle.

Depending on your sitbone measurements, the Trek Inform might be fabulous. (if you get one before our clinic gets our sample, let me know how you like it, ok?)

YMMV.