I thought that in the morgue photos she looked clearly African/Caribbean/mixed race, so I included African-American and Hispanic women as well as dark Caucasians. Most of them were very sketchy on the details and only a couple have NAMUS listings.
http://www.charleyproject.org/cases/v/vanburen_edna.html -- she's a bit too old, but what little you can see in the photos doesn't look 45.
http://www.charleyproject.org/cases/s/simms_johanna.html -- how would she look with her hair left curly and henna'd?
http://www.charleyproject.org/cases/p/prince_shelli.html -- seems like the right style but is a larger woman? Also a bit young.
http://www.charleyproject.org/cases/w/williams_mary.html -- something about the face...
http://www.charleyproject.org/cases/v/vicent_tracie.html -- this woman has relatives in Virginia, worked as a prostitute, had children though no mention of surgery/C-section
http://www.charleyproject.org/cases/w/wilson_raechelle.html -- this woman is too young and too tall, but her face is similar and she has a vague disappearance date in Kansas, which would be a bit over 12 hours away
http://www.charleyproject.org/cases/s/scheer_lisa.html -- I thought she had a certain facial similarity, though she disappeared a year before