So, I'm reading Wikipedia:WikiProject and nothing is jumping out at me as prohibiting a WP:WOMEN project. It says,
A WikiProject is a group of contributors who want to work together as a team to improve Wikipedia. These groups often focus on a specific topic area (for example, women's history), a specific location or a specific kind of task (for example, checking newly created pages).
Couldn't our task be to recruit, encourage, and support women editors?