She is beautiful! Glad she is letting you close. Worried about there being no sacs - that may not be good. Would love to see a live kitten. Glad she is pushing without distress.
Just rub it with your hands or a corner of the blanket between your hands. If there are no sacs this is not good. Poor little mama. Pushing out dead kittens!
They are born in sacs. The mom has to bite open the sac and get the kitten out. She has to chew the umbilical cord off, and clean the baby to stimulate it to breathe. She eats the placenta. Make sure the placenta comes out - very important.