I see. OK, I will try a men's narrower saddle for her. I hope it works out. I am currently waiting for a new bike I bought that comes with Selle Italia Flite Gel Kevlar. Although it is not super narrow, it is narrower than most of the women's saddles. I put it on her bike and ask her to try it out. If it lessens her pain in any way, then that is the way to go.

About the shorts, I bought her a pair of Pearl Izumi cycling shorts for women, and I believe they have that "wing" section. Comparing with my pad, hers appears to be wider particularly at the part you described.

Thank you very much for your tips and suggestions. They are extremely helpfu. I will let you know how it goes.