Welcome to the forum. Since your daughter is just 4 years of age you should get her examined by a doctor. It will be better for her to get her ear canal
and ear drum( tympanic membrane) checked up. If there are any findings she may require an audiometry
test. If needed she can be treated with the appropriate medications or ear drop
Ear is a very delicate organ. The structure of the ear is such that it does not require any forceful cleaning. The dust and wax come out by themselves. If there is any problem like itching, difficulty in hearing or other discomfort it should be examined by an ENT specialist
Try not to be fidegity with ears. Have a good day, take care.