Thanks for query.
In this case you both are right ! as it seems that your daughter is having Allegic Bronchitis.
Identify the cause of allergy and avoid it.
It may be due to dust allergy
,pollen body allergy or there may be some internal allergy
like worm infection
Go for blood test for tc,dc,esr.
Go for x ray chest.
After report go for the treatment accordingly.
Ok and bye.