I am also wondering what the vomit looks like? Is it "normal" vomit; or frothy and yellow or ? Is your yorkie acting normal otherwise? Does she have energy and is playful?
I have 3 yorkies, I don't personally have the pet insurance as they exclude so many things and I work with medical insurance everday and I see what a racket it is.
Maybe others have experience with it and can help you.
A lot of people recommend putting a cetain dollar amount aside a month and saving up for any emergencys.
__________________  Bella (I miss you)  Sachi  Emmy |