Make sure you get some Nutrical to have on hand in case she gets shaky or lethargic again. If she is hypoglycemic, the nutrical will really help.
Also, please be cautious with vaccinations. Because of the tiny size of the yorkie, it is highly recommended to never give combination vaccines or lepto as they have a very high rate of severe reactions. There should be a two week period in between shots as well.
Dr. Jean Dodds, DVM has a vaccination schedule that has been adopted by the top 27 vet schools in the US. You can find that at:
Vaccination Schedule Recommendations For Dogs
Another great site for information is:
HomeVet Medical Center [ HomeVetŠ Natural Pet Care]
You can never be too careful with a toy breed puppy!!!! Good luck to you and hope she continues to be well.