I am so sorry to hear about your little Pollianna being ill. My Cookie was diagnosed with PLE in December 2011 and she is doing very well.....so don't give up hope! This condition is very treatable. Sometimes if it takes a while before the diagnosis is made and if they have been sick for a while it can take a bit to turn them around. The most important thing is to get them eating! If she is, I strongly suggest that you do a consult with a veterinary nutritionist. I did and home cook for Cookie....I believe that diet is largely responsible for her doing so well.
Here is a link to her story that may be helpful to you:
http://www.yorkietalk.com/forums/sic...ia-update.html
I will keep you and your baby in my thoughts and prayers. Give me a hollar if I can help you in any way. Keep the faith!!