J.R.
Hi A..
Could it be croup?
My son has gotten it since about your daughter's age (he is 3 1/2)...
if so, the best things to do (as per our dr who is tops in our area):
-- let her breath cold air when it happens -- breath in air from the freezer or fridge or outside
-- cold air humidifier in room at all times (not hot steam.)
the above has helped his croup episodes be more manageable. if it is the croup and the above does not work, there is a special steroid to be inhaled through a special machine with a mask...this you need definitely to consult with a dr.
good luck.
jilly