Foster Parents of Native American Girl, 6, Say Her Distraught Siblings Now Sleep in Her Room

Rusty and Summer Page say the children can't understand why Lexi, who was taken away over her heritage, isn't coming home.

The foster family of a six-year-old girl who was removed from their home vows to do whatever it takes to get her back.

Rusty and Summer Page have been trying to adopt Lexi for the past three years, but the little girl, sobbing and clutching a stuffed animal, was taken from the Page's home last week by Los Angeles County child welfare authorities.

Read: Sandra Bullock Adopts a Second Child: Meet Her 3-Year-Old Daughter

Lexi has been sent to Utah to live with relatives of her biological father. The reason?

She is 1/64th Choctaw, and under the Indian Child Welfare Act, Native American children must be placed with relatives or tribal members.

But the Pages tell IE that Lexi is their daughter, and has been since they took her in at age two.

"She is not our foster child, she's our daughter. And I was her mommy and Rusty was her daddy and this was her home, so they're wrong," said Summer Page.

Her siblings are camped out in her bedroom, waiting for Lexi to come home.

Read: Man Convicted of Raping 13-Year-Old Foster Daughter Gets 100 Years in Prison

A petition to bring the girl back to the Page household has more than 112,000 signatures.

The Pages are appealing the removal and say they will take their case all the way to the U.S. Supreme Court if they have to.

Watch: Parents Wow to Get Foster Daughter Back After Being Removed Over Heritage