Alex and Justin could you use the Duplication Spell on Frankie Stein. To Duplicate Frankie Stein two times. Justin would have 3 Monsters, so the Monster Hunters could captured them.
Since Franken Girl returned and got to see Juliet in this episode, imagine if Franken Girl said to Juliet "Since you are dating my daddy, does that make you my mommy?" Juliet would be a little freaked out by this.