Baby nests

Today when I went to the buns I move our female bunny and she had made a nest. Being a velvetine it was extremely soft but that is not my point she is with a neutered boy but I am still a bit worried because I saw on this thing a rabbit who had nested so much they nearly lost all her fur!
what do you think I should do?
should I just leave it or take it away? Please help me!
I really dont want a rabbit with no fur

She won't pull out all of her fur seeing that it's still winter.

This is a false pregnancy and you'll need to get her spayed. They are not usually dangerous although they can be annoying for you and the rabbit.
Also if they continue to have them there is the chance of the mother dying of shock when she doesn't give birth (this happened to my friend's 3 year old female) or losing blood.