23. Nia & Kendall Face Off

Abby challenges Nia and Kendall with tough head-to-head trios but the group tribute to Madonna leaves the moms wanting more. Holly suspects Abby has a hidden agenda for Nia but, when she brings Nia's manager to the studio to investigate, her strategy backfires. When talk of the girls' technique erupts at competition, Abby abandons the team.