A Washington County mother is charged with abusing her adoptive daughter inside their Avella home for years.VIDEO: Watch Marcie Cipriani's reportPolice allege that Rana Cooper, 46, forced the girl to scrape her finger around the rim of the toilet, then eat what she found there. They also accuse the mother of biting the girl's nose until she bled, beating her with a brush, trying to sew her mouth shut and choking her and a list of other crimes."None of that happened. I'm here every day. None of these are true. If anyone around here knows any of us, they would know this isn't true," said Ronnie Cooper, who identified himself as Rana's son and the girl's brother.Cooper said his adopted sister is now 16 and came to live with them when she was 10.According to the criminal complaint filed against Rana Cooper, she admitted to submerging the girl's head in water for three to 10 seconds.Rana Cooper is charged with simple assault, endangering the welfare of children and recklessly endangering another person.Ronnie Cooper said Rana Cooper is not talking about the case, on the advice of her lawyer."Everything will come out later. But like I said, none of this is true," Ronnie Cooper said. "So once her court date happens, everybody will see what happened."

A Washington County mother is charged with abusing her adoptive daughter inside their Avella home for years.

VIDEO: Watch Marcie Cipriani's report

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Police allege that Rana Cooper, 46, forced the girl to scrape her finger around the rim of the toilet, then eat what she found there. They also accuse the mother of biting the girl's nose until she bled, beating her with a brush, trying to sew her mouth shut and choking her and a list of other crimes.

"None of that happened. I'm here every day. None of these are true. If anyone around here knows any of us, they would know this isn't true," said Ronnie Cooper, who identified himself as Rana's son and the girl's brother.

Cooper said his adopted sister is now 16 and came to live with them when she was 10.

According to the criminal complaint filed against Rana Cooper, she admitted to submerging the girl's head in water for three to 10 seconds.

Rana Cooper is charged with simple assault, endangering the welfare of children and recklessly endangering another person.

Ronnie Cooper said Rana Cooper is not talking about the case, on the advice of her lawyer.

"Everything will come out later. But like I said, none of this is true," Ronnie Cooper said. "So once her court date happens, everybody will see what happened."