J.N.
I haven't had this issue - actually quite the opposite! My daughters eye teeth never came out, and the adult teeth have grown in around/behind them. It's been a year and they still aren't even loose. The last dentist said wait on the eye teeth (but pulled a molar he thought should have already come out ...), and with insurance we haven't been able to go to another yet. (I had the same issue and had to have them pulled!)
GRRRR!
I would ask the dentist to really look into where those teeth are. If you aren't satisfied with what he's doing to care for her dental health, find another dentist. And be ready for orthodonture :(