judge bohren makes a ruling. >> a major ruling tonight from wisconsin. geyser and ms. weier, be retained in the adult jurisdiction. >> each of the girls has pleaded not guilty by reason of mental defect or disease. >> reporter: no question in your mind where they needed to be? >> adult crime is adult court. if they had stolen a candy bar, sure, that's a child. but you tried to kill somebody. >> so it seems the cases are going to trial. >> there's immense risk going to trial because a jury could conclude that she is not only guilty but legally responsible. >> we truly believe that anissa knew what she was doing was wrong. >> reporter: this huge question looms over all of this. will these girls be locked up for decades? what will the court decide? ♪ i have type 2 diabetes, but i manage it well. ♪ ♪ jardiance ♪ ♪ it's a little pill with a big story to tell. ♪ ♪ i take once-daily jardiance, ♪ ♪ at each day's staaart. ♪ ♪ as time went on it was easy to seee. ♪ ♪ i'm lowering my a1c. ♪ jardiance works 24/7 in your body to flush out some sugar! and for adults w