India, June 1 -- Heidi Broussard's mother revealed that her daughter's best friend, Magen Fieramusca, sent her a chilling four-word message after Heidi disappeared. The message read, "I hope she rots."

The message was sent by Fieramusca to Heidi's mother, Tammy Broussard, in December 2019. It was during the time when Heidi and her newborn daughter Margot were still missing. At the time, Fieramusca had told Heidi's family that she also had just given birth and was still in contact with Broussard.

Tammy told Dateline NBC in an interview that she received the text and was shocked by its cruelty. She said, "To hear that message from her, I was just like, I can't believe she sent that."

Tammy also said that Fieramusca kept calling and texti...