The women's college division has only one division. There are only 7 teams. If a DI school added wrestling, it wouldn't make any difference division wise. For there to be another division, there would have to be at least 20 DI teams, and since it's the smaller schools that are more willing to pick up on this then i don't think it's gonna happen any time soon.
It might be a good idea to support the smaller schools who are supporting the sport rather than wishing it at the DI level which is cutting men's teams at an astounding rate.