I am sorry to hear Gucci has CT after all that she has been through already.
Here is a thread about a medication that is being used in a new way to help dogs with CT:
http://www.yorkietalk.com/forums/yor...blem-news.html
Other people who have been through this with their Yorkies will be able to give you tips. Keeping weight down is important and puts less stress on the airway, lungs, and body in general. Keep her from getting overheated. Heat and humidity are really hard on a CT dog. Try to keep her from getting overly excited.
Longevity: Lisaly had a baby with CT who had a very long life.