02/01/2012 08:24 am ET Updated Apr 02, 2012

'Dance Moms': Abby Makes A Dancer Cry And Fights With Her Mom (VIDEO)

On Tuesday night's "Dance Moms" (Tues., 9 p.m. EST on Lifetime), young dancer Peyton was disappointed, and she made sure that Abby Lee Miller knew it. "I thought that I was better than the rest of the people, performance-wise."

"Oh, that's cocky," said Miller. As the other dancers looked on, she chastised Peyton for dissing the other girls in front of them. "We don't critique each other. I asked you how you felt about you, not in comparison to everyone else, just about your performance."

Peyton's mom stepped in and told Miller that if she wanted to pick a fight, she should do it with an adult, not her child.

And that's when Miller went way over the top and the insults started to fly. (All in front of the children, natch.) "Your daughter ... has a smart mouth on her, you need to dig your fingernails into her back and tell her to shut her mouth."

As Peyton sobbed, her mom retorted, "Shame on you!"

Watch Abby Lee Miller fight with the "Dance Moms" Tuesdays at 9 p.m. EST on Lifetime.

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