Are the other 2 a pair? if so Maybe you'll get lucky and they'll hatch some babies and you'll get one that's compatible with her. Unti then I would go with the previous poster and at least keep her when she can see the other quail . I have a bunch of extra quail right now both coturnix and buttons so I can play musical quail if they aren't getting along. I finally managed to introduce one of my loner girls with a pair, they finally accepted her . they are all snuggled up together right now sleeping.