Yeah, Cathy got her butt kicked in two groups, and yes, the dancers were superior, and Nia showed that she's a better dancer than Vivi here. I loved Nia and her colleague's "Snake" type dance - seriously it was entertaining and good.
Bad - I cannot believe Abby is more concerned about her studio she didn't bother to see how her mother was doing. Very callous IMHO - my parents would disown me. Then she gets mad about an indie choreographer and yells at the mom who got it simply because she says she wants individual time like Maddie gets with the other instructor. The mom fairly said she thinks it's bull (she didn't say it) that she'd have to give a present to the dance teacher to get that quality time. I do agree with her - unless Maddie's mom IS paying for that special instruction (which Abby could easily and politely prove), it IS unfair.
If things like this don't sink Abby's studio, I don't know what will.