Lisa and her daughter Sara each claim the other is an unfit mother. Lisa admits she has called her daughter a drug addict and thief and claims she uses drugs in front of her children. Sara says her mother has never shown her love and affection, and that her name calling has ruined her life.

WATCH: 27-Year-Old Says Mom Calls Her 'Junkie,' 'Whore,' Has 'Ruined' Her Life

Sara claims her mother has even tried to “publicly humiliate” her on social media.

“My mom is vindictive. She calls me a junkie and a thief on social media,” says the 27-year-old. “She wants everybody else against me.”

Mother and daughter speak to each other face-to-face for the first time in a-year-and-a-half on Dr. Phil’s stage, and Sara tells Dr. Phil how she claims that she believes her mother has set out to destroy her on social media.

WATCH: Woman Claims Daughter “Cares More About Drugs Than Her Own Kids”

“She says the most mean, rotten, horrible things anybody could say to anybody, let alone a mother saying that to her daughter. It’s embarrassing,” Sara says. “Why would a mother post that about her child?”

In the video above, Dr. Phil reviews some of the social media posts Lisa has made about her daughter. What does Dr. Phil say might be behind her actions? Can Dr. Phil help these woman recover their relationship? This episode of Dr. Phil airs Monday. Check here to see where you can watch.