My main issues with the addition of Mia is I don't believe the instructors were surprised that she was joining the group for the week and should have planned solos accordingly. It wasn't fair to the other soloists to leave them hanging on a limb whether they were going to get to dance, while Mia had her slot wrapped up. It was very sweet of Hannah to tell her mother that she would be willing to forgo her dance even though you could see that she was hurt by it. Even the sweetest mom of them all, Ana, was left in tears worrying about Kimmy and how she'd feel if she lost her solo spot in the 11th hour.
Then with Mia and Bridgette, Mia put her hand in Bridgette's face. They were both clearly wrong, but if someone put their hand in my face in a argument, my reflex would be to push it away as well. They acted like Bridgette (never did I think I'd be defending her) had thrown a sucker punch. By the time they got to Jessi's mom, I almost forget what the argument was about, but it seemed like for once she was making a reasonable argument about the favoritism they displayed toward Mia. (I'm fuzzy on that now, and I've already deleted it from my DVR, so I could be mistaken about Jessi's mom). In the end, it was terrible to see Lucas and Jessi leaving in a heap of sobs.