I just wanted to add because I've seen bits of this mentioned but not in this way:
In my opinion, no grandparent has any 'rights' to see a baby^^ so soon after birth. Any more than somebody has a 'right' to see you whenever they want to. The decisions that are made about who will see a baby in the first few weeks of life should be solely based on the baby's wellbeing.
Sometimes, probably even often, this means doing what is right for the mother, because if the mother is struggling to cope, the baby will suffer in some way as a result. This is the case for so many parents, it's very seldom that a man is primarily responsible for feeding the baby and learning the baby's cues the way the mother that gave birth to that baby is.
So if, for whatever legitimate reason, the mother is highly uncomfortable about ANYBODY visiting, then it is nothing to do with how fair it is to the person who can't see the baby. If she needs her mother while she learns to breastfeed, learns to read baby's cues, learns how to do her new job after DP/H goes back to work in a couple of weeks.
I really can't see how it's right to focus on the 'rights' of the grandparents. I'm struggling to see how somebody is entitled to visit despite someone's wish for them not to, solely by virtue of having raised one of the parents.