If she's not moving them to inaccessible or dangerous spots, I wouldn't worry about it too much. The most important thing is that she feels safe. If she is though, you may want to try to "contain" her somewhere. My cat had her litter on Tuesday, and we had her birthing box set up in the bathroom under the vanity. I also set out some towels in various spots around the bathroom, so she could move the kitties to a few comfortable places, and for the first few days we kept the bathroom door closed. That way she could technically choose her own spot, but it had to be in the bathroom! I'm sure it also feels more private to her to have her "own room". You could try this in a bathroom, laundry room, office, etc... and see if she settles in a bit. Mine hasn't moved her kittens from the birthing box, and we keep the door slightly ajar now so she can come visit us when the babies are sleeping
Good luck and I hope this helps!