My Niece Is Reading Tarot cards

In this episode Dr. Betters answers the question, "John asked, I have a niece who I hold in very high esteem who recently began reading Tarot cards. I know that the Bible warns us to not dabble in the occult and divination. She was raised up in the Catholic faith but I not sure if she truly knows Christ. I visiting her and her family in a week’s time. How can I convince her that what she’s doing is very risky?"