The mother of slain Texas woman Heidi Broussard opened up about her death, and how her close friend continued to ask questions after allegedly abducting and killing her.

“She premeditated all of this…Me and my husband, we really want to know why. Why would you hurt a friend?” Broussard’s mother, Tammy, told Dateline.

Tammy Broussard was referencing Megan Fieramusca, a 33-year-old Houston woman who’s accused of smothering Heidi to death, a friend she had known since childhood. The motive, according to police, was Heidi Broussard’s newborn baby, Margo.

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According to court documents, Fieramusca pretended to be pregnant alongside Heidi, but it was all a ruse.

Investigators said Fieramusca planned in advance to take Heidi’s baby, and did so on December 12, after the luring the unsuspecting mother from her Austin apartment.

After Heidi disappeared, Fieramusca “called and texted, wanting to know if police were doing anything,” according to Tammy Broussard.

“The only concern she had….. was wanting to know if the police were doing anything.”

Eight days after her disappearance, police found Heidi stuffed into the trunk of Fieramusca’s grey Nissan sedan, inside a black duffel bag. She had been strangled to death.

Prosecutors allege that Fieramusca “intentionally cause(d) the death of Heidi Broussard by ligature strangulation, and by asphyxiating Heidi Broussard with a leash.”

Authorities found baby Margo inside Fieramusca’s home in Houston, sitting in a baby swing. Fieramusca claimed the baby as her own and said she had the infant at a birthing in The Woodlands. When pressed on the name of the center, Fieramusca allegedly claimed she couldn’t remember.

Medical testing later confirmed that the baby was indeed Margo. She was returned to her father, Shane Carey, in Austin.

“What hurts most is that she betrayed my daughter,” Tammy added.

Fieramusca remains behind bars. She’s facing a capital murder charge, along with a felony tampering with evidence, namely a corpse, charge.

Read all our stories on the Broussard case HERE

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