Agreed 100% that there isn't enough research on women. I get that subjects with oscillating hormone levels is a major challenge to repeatability, but they *do* make up more than half of our population. For anyone interested in the status of studies on women, I'd very much recommend Rachel Gross' "Vagina Obscura: An Anatomical Voyage". Unsruprisingly, much of the research done (and discoveries made) in this area is by women researchers. (sigh)
Also, I found an old copy of Grey's. The rete ovarii isn't discussed much, appears in a diagram of the ovary - in cross-section, so just a hoop of cells, and is described as a 'remnant of the mesonephric (Wolffian) ducts / connection to theca and lymphatic progenitors'. In the same detail box, (and the same color as the 'hoop') are Hilar cells that 'contain Reinke crystals typically found in testicular Leydig cells / androgen secretion. The unwritten subtext appears to be "this is a holdover from embryonic sexual differentiation - nothing to see here".
Not an area I've been digging into; I have no idea what Reinke crystals are, or Leydig cells - although 'testicular' tells me where to look. Had a dusty copy of the book, thought it was probably 'old enough', thought I'd look.
TL;DR: they might be in older versions of Grey's, but that doesn't mean much...