“My niece is out of control, and my sister-in-law is only making things worse,” says Tanya. “April prefers to be a friend and not a parent.”

TELL DR. PHIL YOUR STORY: Huge family drama?

Tanya claims that her 16-year-old niece, Annalisa, runs away, uses drugs and alcohol, shoplifts and is rude and disrespectful. She claims Annalisa has tried to stab her in the throat and has threatened to cut off her little sister’s finger, and she says she blames her sister and brother-in-law for the teen’s behavior.

“April writes it off as Annalisa being stubborn,” Tanya says.

WATCH: Why Parents Say It’s ‘Almost Impossible’ To Discipline 16-Year-Old Daughter

Tanya says she also believes Annalisa is also selling her body and that she fears for her niece’s life.

“I know Annalisa is prostituting because I’ve seen screenshots from text messages from her cell phone,” Tanya claims. “It breaks my heart and it makes me angry that it’s been allowed to get to this point.”

WATCH: Watch What Happens When Transporters Wake Teen In Middle Of Night To Take Her To ‘Dr. Phil’ Show

Turning to Dr. Phil for help, Tanya says, “April needs to stop enabling her daughter’s behavior. Get a backbone. Do the tough work of being a parent and enforce rules.”

On ’Friday's episode, hear from April and Nate. What do they say about their daughter’s behavior? And, hear from Annalisa. Check here to see where you can watch.

TELL DR. PHIL YOUR STORY: Problems with your teen?

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