This was your first time your baby had a gromming? But she still did not need to behave like that towards you

my gosh, what the hell did they do to have caused her so much stress? When you picked her up did the groome say she behaved badly? or did not coroperate with them? I would be calling them back for a more detailed explainantion of the grooming experience! you have every right to know what heppend to your little yorkie! I would be very upset about my yorkie's behavior ! Espeically if she was showed you how upset she was even with you!
Suzi was shaved down before, and i had recognized her either when picking her up. However she literally j umped out of their arms when I picked her up !I have taken her back a few times afterwards, and now she has taken to a disliking to the groomer whi I always take her to! However, I know he is a very good groomer, very gentle, kind, groomer, who I trust. Suzi does not like him though! But, Like going going to the Vets, dogs just know ! However, typically do not behave in this manner towards their owners.
Please take it up with the groomer, if not the groomer , then the manager. There are indications your baby was mistreated. OR do not go back, EVER. Choose a groomer that you can always observe. I am very sorry that she was traumatised. Her next groomer experience may be a difficult one now. She is going to need a patient, caring groomer. Hair grows back, however trauma is more difficult to overcome.