Cassidy says over the years, her mother, Melinda, has been more of a friend to her than a parent. The 18-year-old claims her mom has drank and done drugs with her and her friends, and that her mom even hooked up with a 19-year-old ex-boyfriend of one of Cassidy’s friends.

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Melinda denies doing drugs with her daughter and denies having sex with the young man. However, she does admit that she likes to post selfies and show off her body because she says she’s proud and confident of her looks.

WATCH: Woman Says She Fears Daughter May Kill Her; Teen Says Mom Is An 'Attention Seeker'

“You’re entitled to a life, and you’re entitled to be proud of yourself and have fun,” Dr. Phil says to Melinda. “Can you acknowledge that your role as the parent here has blurred boundaries and you have not always taken the adult position in this relationship?”

Hear Melinda’s response in the video above.

This episode airs Friday. Watch more here.

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'I’ve Always Been Put Down To The Lowest By Everyone But Mostly By My Mom,' Teen Says