Well then thats a VERY nice sized litter. But you're right that you might want to remove some of them so she's not so overwhelmed. I've never had problems moving babies in with other moms, the only thing you want to watch is that all the babies are close to the same size, otherwise the bigger ones will push the little ones out of the way and the little ones won't feed as well. I also like to give a handful of oil sunflower seeds to nursing mom tubs. I think they appreciate the extra fat and protien.