My cats recently gave birth 6 days apart with my docile cat, Boots, having her's first. The far more dominant Tootsie went NUTS wanting to care for Boots' babies. I figured she would calm down once she had her own litter but not so much. Tootsie still comes running when Boots' babies cry and she'll even stop nursing her own to "rescue" a kitten having a bad day. Today she even stole some of Boots' kittens (leaving one of her own behind) and hid them behind the couch. Is there anything I can do to deter Tootsie from wanting to take Boots' kittens without locking them up separately? Boots is very submissive and won't even try to stop Tootsie even though it obviously distresses her.