Have you gotten an audiology exam for your daughter to really check her hearing?
I asked for an audiology exam for my son in kindy. He had become "inattentive," but no language issues. He had [passed all the hearing tests at the [pediatrician's.
Much to our surprise we learned that he is almost deaf in one ear. We got a very good hearing aid and he has an FM system this year; inattention is gone. At the yearly [pediatrician's visit, they again said his hearing at their screen is "normal," which it isn't.
Anyway... I don't think the pediatrician's hearing screen is done correctly in many cases. For any speech problems, I would get an audiology exam, just to make sure. HTH.