
What ever you do do not leave her alone, and always watch her when she goes out in the garden as she could have a puppy out there, I once had a bitch that had one while she was walking to the car to go to the vets as she hadn't had a pup for four hours and it just slipped out, so be on guard.
Also make sure see is in a quiet place with no onlookers other than yourself, this will make her feel safer. Short walks around the garden can help with labour in my experience. Also make sure you have the vets phone number handy just in case. I trust you have all the relevent equipment in your welping kit.
Good luck
Kerry