Additionally berating the girls for not following choreography and saying if they were on Broadway and didn't follow it they'd be gone? - well true, to a point.
People as mentioned are human, they will forget their routines.
Secondly these girls will probably NEVER make it to Broadway and even those who could she's berating them and punishing them (because she hates the moms) to death that she's going to make them LOSE interest in even trying.
I'm honestly HONESTLY seeing Maddie start to give up - even if slowly - because of this.
Finally - school is more important, having a life outside of dance is more important. Abby's getting paid if the girls skip out a dance day or not.
Hopefully the girls will continue to have the support of their moms - who are more encouraging to them than Abby truly is.
But I will say that the contracts the Moms signed for them and their daughters must be watertight and dipped in gold pressed latinum for them to not just up and walk away from this studio. I would if I had one day like Abby's given them - there is pushing for results and there is berating to bullying. Abby is the latter.