I'm sorry to hear about LuLu
If you still have her body, it may be best to send her for testing at your state lab. You may be dealing with a disease like Marek's which can present in so many ways.
http://www.backyardchickens.com/a/the-great-big-giant-mareks-disease-faq

If you still have her body, it may be best to send her for testing at your state lab. You may be dealing with a disease like Marek's which can present in so many ways.
http://www.backyardchickens.com/a/the-great-big-giant-mareks-disease-faq