Maybe you could get a recommendation to see a specialist to see what your other options are.

I grew up with constant ear infections i spent most of my childhood on antibiotics with my ears running and no relief. I to this day still have many ear infections. i have lost a great deal of hearing because of this and i've been told by many different doctors over the years i'll be deaf before i'm thirty if something is not done.

My sister has the same problem and did have tubes put in many times and it did offer her relief. But eventually she did outgrown the problem.

Try and find a viable solution for your little DD.