Okay, So I have two female cats. Olive and ginger, a pair of female twins. So, when Ginger gave birth she didn't take care of her kittens she was too distracted with olive's babies. But, we solved that solution already. She cares and is loving for her babies now. So, we usually let Ginger go out at times she wants to leave the room she's in. (It's locked just for her kittens and her) When we do let her go out though, she will try to nurse her sister's babies? I'm questioning if I should let her nurse them or not? I read online when she does give birth she cannot nurse her sister's kittens, but now I'm not sure. So can she nurse her sister's children or not? Another topic I wanted to ask about is how to calm Ginger down to not mix the litters together? And, when can I mix litters?