I'm really concerned about my six-year-old daughter's wheezing cough. She's had it for the past year, and we've been using a Sereflo inhaler as advised by our pulmonologist. The dosage has been gradually reduced, and now she's only taking one puff at night. It seemed to be working better, but these last three days have been rough with her experiencing continuous coughing as well as vomiting. We tried giving her a Levolin inhaler like the doctor said, but I'm not sure what's suddenly causing this flare-up. We're still following the six-month treatment plan with the inhaler. What could be the reason for this, and how can we help her get better permanently?