Congratulations on your new babies. They are all so adorable.
Yep, everything everyone has said is absolutely correct! I had one litter so far and the new mommy was a bit apprehensive of me taking her pups (when I needed to) at first...grumbled at me, but she knew I was not going to hurt them. But yes, just sit near/with her and the pups and talk to her. Tell her how beautiful her babies are & how proud you are of her, what a good mommy she is. She will come to trust you with her pups in no time. When you do handle a pup, assure her while you are picking it up and while you have it that it is fine, it's okay.......if she wants to come up and check on it while you have it, let her; again assuring her all the while.
Congrats again! Hope mom and babies continue to do well. Welcome to Yorkie Talk; be sure to stick around. You will learn so much.