Stephanie and Victoria say their older sister, Alex’s, drug use has torn apart their family and that she doesn’t take any responsibility for her behavior.

TELL DR. PHIL YOUR STORY: Have a Volatile Teen, Parent or Sibling?

“Alex is very oblivious to the pain that she’s caused,” Stephanie says, adding that she withdrew from school because she was so depressed about her family life.

“Growing up in a small town, everyone just thought badly of me, thought I was just like her,” says Victoria, adding that she felt like her parents put her on the “back burner” because they were always dealing with Alex.

WATCH: Woman Says Former Homecoming Princess, Varsity Cheerleader Daughter Now Has An Arrest Record And Abuses Drugs

Alex says her family blames her for everything. “My sisters gang up on me. They constantly criticize me and put me down. They show me no respect,” she says. “Everything that happens is blamed on me, no matter what it is. It is 100% my fault, whether or not it has anything to do with me. It’s not fair; it’s not right.”

Dr. Phil addresses the family. “I’ve always said that when a member of a family gets sick – whatever the disease – the whole family is impacted by the disease, right? And it’s the same with drugs. It’s not just the one person,” he says, pointing out to Alex how her behavior is taking a toll on her siblings and mother.

Does Alex want to change? Check here to see where you can watch Wednesday’s episode of Dr. Phil

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