I have tried to steer clear of commenting on speculation of what happened.
I think there is a lot of truth to the BBM in your post though. Whether it's as simple as Jahi being scared to have the procedure or it goes deeper, remains to be seen "if" we ever get to see or here from the hospital on what happened that day.
I have felt from the beginning, that the fact that the hospital wants to make a statement, and is not being allowed to, says that they have the other side of the story. If the family can disparage the hospital, then the hospital should be allowed to speak.
But I guess, once its in a courtroom, all sides of the story will be told.