Nancy Grace is livid at Casey Anthony -- slamming her new legal advocate gig as a shameless cash grab and insisting the focus should remain on her murdered daughter, Caylee.

Casey Anthony, who was acquitted in the murder of her daughter about 15 years ago in Orange County, is using TikTok to promote herself as a “legal advocate.”

The former attorney for the parents of Casey Anthony, the woman dubbed "America's most hated mom," shared his reaction to her new video series as an "advocate."