Can you bring the nest to the door and place the kittens in the nest and move it back to the original location? If not you might have to be a little forceful and pick up the kitties make sure you stay where mommy can see them at all times until she is comfortable with you around the babies. You might take that time to weigh them and make a paper so you can list the weights for the next few weeks. remember how you felt just after you had your son and everyone was grabbing him and wanted to hold him? cat mommies are the same way but you cannot tell her it is for their own good. Talk softly to the mommies while you are moving them and let her follow you into the nest