Hmmmmm, just my opinion but it doesn't sound like the baytril was working and the other stuff did.
Did you ever get a definitive diagnosis? If you did, do a google search and see what other people used.
Penicillin (baytril) and sulfa both effective for strangles. He gave her 2 shops last Thur. I gave her another 2 Sat. Monday her temp even higher. I did notice that she might have been wheezing less though. Monday she was confused and blowing out green and rust colored snot everywhere and no appetite. We started the sulfa and in 24 hours you would not believe the improvement but it could have been the bayrtil I guess. The owner tells me that antibiotics don't help strangles anyway and it just has to run it's course. Whatever. I'm just happy she's pulling thru and don't want any regression.