Oh goodness, I wish I had seen this sooner. I have a pup with PLE .. and that classic bloat is so common with them. I am glad you got to a vet and got her diagnosed!!
You didn't mention her diet, but hopefully they have put her on a prescription diet. Royal Canin Gastro diet is often recommended for PLE pups. She needs a very low fat diet. I opted to do a consult with a vet nutritionist and home cook for Cookie.
Here is a thread that you may find informative about my pup, Cookie. She was diagnosed with PLE in 2011.
http://www.yorkietalk.com/forums/sic...ia-update.html
Prayers for your baby girl...hope she is doing well.