Seems obvious–having a female in the group might ease some anxiety/intimidation (which the community has caused) of other females who visit the site and want to follow their progress.
While I agree that it would have been nice, I don't think it was an oversight. In addition to the link posted on how they found people, it's also a bit of a double-edged sword as women are less likely to apply for these types of things. This is their very first attempt; it's experimental. I'm sure when they have more faith in their product/the training, they can spend more time trying to find people from varying backgrounds to highlight.