Hamilton went over those 11 new ballots with Engdahl, along with other ballots that had been offered by Friedberg, and reviewed problems that do actually exist on those votes. In one case Engdahl bluntly said: "Yes, I stand corrected with that."
Hamilton then took a trip back in time to the absentee-ballot review in December. The Franken campaign had submitted to Plymouth the cases of three voters who were asking for their ballots to be included. Engdahl had rejected all three at the time.
For example, one of them was a blind woman, who explained that her son signed the forms for her. Having someone else sign a ballot form is normally illegal -- except for someone who is unable to sign their name due to a problem such as a disability, which is specifically codified in state law.
But Engdahl continued to say this ballot shouldn't be counted -- that it was not the genuine signature belonging to this woman. And she said this even after Hamilton had her read from the relevant statute.
Hamilton also reviewed other envelopes that roughly match the ones that Engdahl has now said should be counted -- presumably the ballots Hamilton is offering are Franken votes -- and securing agreement that if she is for counting other ballots she's given assent to in the last two days, these should be counted, too.
One other thing worth pointing out: During her entire cross-examination so far with Hamilton, Engdahl has appeared to be very uncomfortable.