No worries. Momma cat wants only to protect the little ones. The tiny kittens need protection. Later momma cat may move them again, so that the food would be closer.
@Rays cats, I can't even imagine how you must have felt. You're lucky woman. You can have a cat. I was only allergic to dogs (no dogs whatsoever, my lungs declare a world ward 3 if I go near the dogs, but the owner doesn't bother a bit). I was able to live with Popi. Then Misse (he turned to be...