Make certain you bleach and sanitize your home before bringing her home. Wash her toys too. And blankets. You do not want to re-expose her . She could have even been exposed to the virus at Petsmart . I agree with the others that she was vaccinated too early. Those did not protect her from the virus. This is why it was easier for her to come down with it. I hope she feels better soon and makes a speedy recovery.