Hi Sammie
I hope you understand if I say

What an excuse! I feel quite strongly about this because obviously, babies are there to develop, to be loved and cared for but what your friend does (I'm sorry, I don't want to be rude to your friend) is certainly not right!!! The only comfort I have is the fact that her little daughter will soon speak up to her and she will then see what she is doing...How can she prefer her clean floors to her daughter's wellbeing and urge to explore her immediate surrounding???
Ok, I said enough now! I hope this is just an exceptional way of using a playpen.