I doubt very much that they’d abandon the case. They would re-try.
(If somehow a partial verdict was allowed, I have no idea what would happen with charges not decided.)
I think they would retry depending on negotiations with the defense. After a mistrial I would bet they’d offer to accept a plea of three counts of second degree. If she refuses then I think they would retry for three counts of first degree.
Judge may cave, boot the one juror, new jury acquittal. Judge has viewed the pinko crowds