I think that she is playing this well. She is getting it out now so that it fades into the sunset before the big push at election time. After a while, the people will get tired of hearing about her emails and her server, especially if no major dirt comes out, and move on. Just like they did with Benghazi, and the IRS scandal, and Obama's birth certificate, and ...... And, she is using her "lobbyists" to work behind the scenes to make sure that, if there is anything there, it will never come out.
If the Republicans keep digging after the public has moved on, they will do nothing more than hurt themselves.
Don't forget, she is a brilliant tactician and knows how to play the system!