Do you have any hay or straw? It's not unusual for first timers not to pull fur until later. You can easily pull fur from her stomach/between the hind legs area. It should come right out. It won't hurt her. If you have hay, I'd stuff the nest box (cardboard box if nothing else, can google it) full with hay then push down a fist size hole in the hay towards the back of the box and put the babies there. Any fur you pull can be placed over the babies. Babies are active and can get tangled/choked by cotton and other materials. Better just hay and fur if possible. Several babies in a hay nest large enough to barely fit your fit doe in to feed them will keep each other warm with even light fur covering them. If it's really warm there, fur may not even be needed but it makes a nice bed for them placed on top of the hay. Hoping the best for your buns.