My cat just gave birth to 6 kittens a few hours ago, and she has been a little uncooperative taking care of them. She's gotten better, but whenever my boyfriend and I walk away from her (even for a minute) she gets upset and follows us and meows very loudly. So now we are having to sleep next to her and the babies or she won't stay with them. Is that normal or is there something I should do to make her more comfortable when we can't be with her?