Hi madam, you are giving all medicine for nose not for lungs . thats why cough is not subsiding.
Firstly if you are thinking about adenoids or polyp then your steroid nasal spray
will trest it.
Foreign body in nose will not cause cough.
Treatment: give her a decongestants syrup.
Do steam inhalation. Avoid cold and oily items. Evdn gastritis
causes posterior wall congestion, you can give lanzol
junior tablet one in empty stomach for about 2 weeks.
Give her steroid and levosalbutamol
nebulization once in every 4 hours for 2 to 3 days. This will definitely reduce her cough.