why is she acting like that? she never used to do that until a couple of days ago, and she tried to attack them, but i scolded her and she just ran off. i think she's pregnant again. is that it? what could be wrong?
Hormones. Any female (cat or human) could go bonkers after giving birth. (Postpartum depression). Keep a good eye on her around the kittens so she doesn't really harm them but I'm sure she'll settle down in a few days.