If she used the server for all SOS business, then there has to be classified material on the server. She can’t have it both ways. Tom Brady gets a bigger punishment for not releasing his phone texts. He has a right to not self incriminate.
There is another possibility. Hillary didn't spend a lick of time doing State Dept. business. Pimping for the Clinton Foundation and the Clinton Global Initiative had to be time consuming work. Especially for a drunk.