As your daughter is 9 year old she can undergo a spirometry
test ( pulmonary function test )
In this test the volume and speed of air breathed in and out is calculated.
This test can also help to assess response to treatment.
Get her examined by an ENT specialist
to rule out diseases like sinusitis
, adenoids enlargement .
these disease can worsen your child's asthma and needs treatment.
Get her evaluated for acid reflux
as it can also worsen asthma and keep it uncontrolled.
Is she using inhaler with spacer?
Has she been trained properly on inhaler use?
please see http://www.aboutkidshealth.ca/En/ResourceCentres/Asthma/AsthmaMedicines/Pages/Using-a-Metered-Dose-Inhaler-MDI-with-a-Spacer.aspx