I have a group right now which has one neurotic brindle female who decided to eat someone else's babies. I took the remaining 3 living pinks out(one of which has some missing toes from the carnage) and put them with another mom who had some same-age babies. She took them right in and the other mice in that group didn't have a problem. Neither did the male. Might just have to feed a few of those neurotic meece off. I don't stand for it here.