Thanks for sending your query to us.
your daughter has a very small power which will be useful if she gets eye strain
.Such small children do not get much of eye strain other than too much of video games ,which definetly put avoidable strain on the eye.
you have to take care of general health of the child and proper balanced diet,which is good for the body is again good for the eyes,including milk,fruits and vegetables.
At times it is difficult to force the children to wear such small powers as they as such do not feel benifited by these glasses.
Regular yearly follow up is mandatory,till she is about 18.
Progression is a natural phenomenon and you do not have too much of control over this other than taking care of the health of the child including nutretion and exercise/sports.
There is apparently not much of cause of worry and please do get back to me in case of any further query in this regard.