Hi and thanks for the query.
Since your child has recurrent cough, you have to consider the possibility of allergy, which may be seasonal or due to dust, mite, etc. Secondly, there is the possibility of wheezing
due to allergy or asthma or some sort of bronchitis
. You may also need to check for adenoid hypertrophy , especially if she has snoring
or mouth breathing
Hence you can ask for tests related to these. Meanwhile, it is advisable to do steam inhalation daily at bedtime using a vaporizer, this will keep her sinuses and nose free of phlegm and prevent nighttime cough if due to post nasal drip
Hope you are reassured. Take care.