I really can't help but wanted to let you know I am praying for your girl.
I agree that it sounds like the heart because my Pom used to faint (not often but a few times over the last 3 years and it started when she was around 5 years old). She died of a heart attack at 7 1/2 years old. So, I would ask if they might could do that heart monitor on her as ladyjane suggests.
__________________ Terri, proud mom to Mandie & Shelby-Dale  |