'America's Supernanny': Nevada Abused And Bullied By Her Siblings (VIDEO)

Deborah Tillman has seen a lot of things over the years, but nothing could prepare her for the sibling cruelty she witnessed this week on "America's Supernanny" (Tue., 9 p.m. ET on Lifetime). It was a cycle of violence that started with the parents, and the father in particular. He thought he was disciplining and trying to maintain control of his children, but instead he was teaching them to react with violence and feel like they were never quite good enough.

Poor nine-year old Nevada seemed to get the worst of the abuse from her siblings. She was pushed around, shoved into the dirt, and even ridiculed for the darkness of her skin. Tillman watched, with her jaw hanging open, as Nevada's brother and sister ripped into her for her skin color.

"She took a shower yesterday and she's still dark," her brother said.

"That's why nobody never knows where you are," her sister chimed in. "Every time we're at the store you always get lost because you're so dark."

Tillman got the family to communicate verbally and with "gentle hands," and allowed Nevada a voice to speak out about all the things happening that were hurting her. And the parents learned a healthier way to maintain their authority without crossing the line into bullying or abuse.

"America's Supernanny" airs Tuesdays at 9 p.m. ET on Lifetime.

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