The results of Cricket's culture and sensitivity came back today.
She's got Methicillin-resistant staphylococcus intermedius, Moraxella sp. and Bordatella (bronchiseptica I think).
Staph intermedius is a commensal of the skin, so we're not sure that it was what's causing the issue, but since it was resistant to the majority of the antibiotics tested, it really limited the options. All 3 were shown to be sensitive to doxycycline so we came home with a bottle of 30 days worth of raspberry-flavored doxy. The vet and I were both glad that we had done the sensitivity since there was also resistance to TMS which was going to be the next antibiotic we tried.
I'm also happy because the 30 days of doxycycline is only costing me $53 vs. the $85 a week for baytril.