On Dance Moms Season 4 Episode 15, Melissa let some power go to her head when she took control over Mackenzie's music video shoot.
Elsewhere, the dancers felt serious pressure to keep winning after notching 13 victories in a row, while the illness of Abby's mom continued to hang over the group.
As such, all of the dances featured were dedicated to Abby's ailing parent.
It was more moving than most episodes and you can watch Dance Moms online now to see it all unfold:
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