The WCHA was formed 30 years before the NCAA began sponsoring women's sports, and did not establish a women's league until 1999. No Michigan school has ever been a member of the women's WCHA.
The Women's Collegiate Hockey Association (WCHA) was founded 30 years before the National Collegiate Athletic Association (NCAA) started supporting women's sports, and it wasn't until 1999 that they created a women's league. Notably, no Michigan university has ever been affiliated with the women's WCHA.