Give the liquid amoxi a try if you're still fighting with her. Sassy LOVES Amoxi liquid and laps it right up off the dropper! Plus they can flavor liquid to something like tuna or chicken if you need it.

I found some info on the decongestant for you that might explain the fight with that....

"Chlorpheniramine maleate is famous for bitter taste. Often the pet (especially cats) will tolerate the medication for a period of time but ultimately refuse to take it or even show salivation in response to administration. In such cases, it may be best to try a different medication."