Any good defense attorney would walk all over that in a sec. Gotta have evidence that there ever was anything on the server to begin with ... might have been used for a doorstop ... doubt is all that is needed to sway a jury.
True but a server is mated to one or more other machines called clients. Did Hillary really sit down before the server to do her email, or did she access the server from one, or more client machines? Same for Huma. As far as I know, she and Hillary don't live together... yet. So, from which array of client machines did Huma access the server?