So - we are back to the beginning again

Tippy's face looks like raw hamburger right now - but I have a huge question - has anyone ever had one of these dogs that was allergic to raw/ground lamb? We are really beginning to think that this is what is causing the reaction - The initial fever/infection was most likely caused by a tick/bug bite, but about the same time that I started her on the "ringworm" treatment I started to feed her ground lamb with her regulare dog fod (chicken based) She was getting that for about 2 weeks - during which time her reaction started - she then quit eating period, so I went back to giving her just dry dog food. That is when she improved, but last Monday, I thought "this dog needs to gain some weight" so I gave her one feeding of ground lamb with her dry on Monday morning and by Monday night/Tuesday morning we were right back were we started!

This is truly the last go round - she is back on full dose Prednezone (steroids) and the most powerful antibiotic that they can give me for her - if she has not made a huge recovery by tomorrow/Tuesday, I will have no choice but to humanely put her down

which will break my heart but I don't see any other options.
Thoughts on the lamb reaction?
Vi-Ann