There is something about Fathers and their daughters, that bond of wanting to protect them and then this happens and he is beside himself wanting to make it better and knowing he cannot. He needs time and yes a talk with her Doctor. He may need some counseling for himself too.
I know he is feeling the loss of dreams of how he thought things were going to be for your daughter and he is truly broken hearted so he is walling off his emotions. Remember Mothers have that built in instinct to be the caregivers and we flood ourselves with all the info we can so we can get the job done. This is all foreign to him. He will come around but he needs some helping in getting there. Never doubt that he loves you all.