Asthma doesn't happen in 1 day. She may have a blocked or runny nose because of cold.
If she is breathless or breathing fast immediately see a pediatrician because that needs urgent treatment.
Next Steps
For cold
Use Drops Mucolite LS 10 drops 3 times a day
For stuffy nose
Nasoclear drops 2 drops in each nostrils 4 hourly
Health Tips
See your pediatrician for any further assistance