I think that as long as the 2 adults have a healthy, steadible relationship (straight or gay), and the kid has a good environment, then there is nothing to agrue about.
The only thing is if the couple (no matter straight or gay) is against the kid to be heterosexual or homosexual, then there is a problem
just curious on how does your baby reacts :) does she ask about daddy?
Also, do you gals have plan on how to handle her boy-gal issue when she is older?