Anna Lisa claims that her 26-year-old daughter, Amanda, has been in an abusive relationship with her fiancé, Alexis, for the past 10 years.

“My mom believes that Alexis abuses me because she’s seen bruises on me – but that’s not the case,” insists Amanda, who vehemently denies Anna Lisa’s allegations. “I bruise very easily, and I’m clumsy,” she says.

Alexis also adamantly denies abusing Amanda and says he doesn’t know why her mother hates him so much. He claims it’s Anna Lisa’s fault that Child Protective Services removed his and Amanda’s two small children from their custody and placed them in Anna Lisa’s care.

“I think her actions are what’s really messing things up for our family,” says Alexis in "My Daughter Needs To Leave Her Horrible Fiancé!", part one of this two-part episode. “If she wouldn’t say the negative things she’s said, the kids wouldn’t be taken away by CPS.”

When Dr. Phil says to Alexis that he should be grateful that Anna Lisa “stepped up” to take care of his and Amanda’s children, how does Alexis respond?

Dr. Phil airs Monday-Friday. Check your local listing to find out where to watch.

WATCH: Woman Claims Child Protective Services Has ‘Stolen’ Her Kids

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