The defense attorney asked Miss Honey if she had any evidence of injection of ballots.

A great answer would have been:

"If we had proper chain of custody records, injection of ballots would be clear as day, but since we don't have those records there is way no telling how ballots additional to the 50 we know about, were injected. As such, we can only rely on eye witness testimony, video evidence, or other sources which I do not have."