We have two happy, perfect kittens she took care of both placentas. We have a little white one who could very well end up looking just like her, and a tiny black baby who looks just like dad. The perfect little family!
As long as the babies are nursing well, you won't need the KMR for them, but mom can drink some each day, and the kittens will love it when they are weaning.
They will need the litter box in about a month. It's so nice that you are prepared .
She's gonna move them. We can see two babies but not the other two. I'm not sure where they are, they might be under her. Poor mama acted like she was starving.