Tiffany says her mother, Wanda, ruined her wedding day, by making her three hours late to the church, wearing a white dress, breaking into song, and deciding to “catch the holy ghost” just as Tiffany and her groom were about to exchange vows.

TELL DR. PHIL YOUR STORY:Know someone who is delusional?

“I wasn’t trying to upstage you, I was so happy and proud for you,” says Wanda, who denies ruining Tiffany’s wedding.

WATCH: Woman Diagnosed With Bipolar Disorder Says, ‘I Can Get Myself Into Big Trouble’ When Off Medication

Wanda says she has been living with bipolar disorder most of her life. Tiffany says she’s sick of her mother blaming her bad behaviors on her mental health.

Check here to find out where you can watch more from part one of this two-part Dr. Phil airing Thursday.

TELL DR. PHIL YOUR STORY: Ready to confront someone?