She's going to get away with it. Not because anyone thinks she didn't do it. The FBI director knows damn well she did it. He even said in the presser that her statements about a) never sending or receiving classified e-mails; and b) turning over all her work-related e-mails were clearly not true.
He absolutely lambasted her lack of care for the security of classified e-mails, even up to and including the use of non-secure devices when overseas, when it would be especially easy for hostile actors to gain access to her devices - which Comey acknowleges may well have happened.