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Jun 30, 2026

Cops who busted smiling sisters Cookie and Kitty offer hint at motive for Texas mom’s murder

Smiling sisters Cookie and Kitty knew the Texas mom they're accused of stabbing to death: cops Email New York Post Read the Latest on Page Six

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Cops who busted smiling sisters Cookie and Kitty offer hint at motive for Texas mom’s murder

By Georgia Worrell Published June 30, 2026, 1:50 p.m. ET

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The vicious, broad-daylight murder of a Texas mother of five was far from a random act of violence, cops have revealed. 

Instead, the three young women accused of murdering Caroline “Caro” Peña – smiling sisters Kitty Mia Diaz, 21, and Amaya Cookie Diaz, 19, and their pal, Kyandra Renee Faz, 21 – knew the 32-year-old victim, Del Rio Police Chief Frank Ramirez told TMZ

All three women were hit with first-degree murder charges after police say Cookie repeatedly stabbed Peña in the back during a heated confrontation in the small border city of Del Rio on Thursday afternoon. 

Caroline Peña in a black t-shirt with a large butterfly and floral tattoo on her neck. 3
The vicious, broad-daylight butchering of mother of five Caroline “Caro” Peña was far from a random act of violence, according to Del Rio Police Chief Frank Ramirez. Facebook/Caro Peña

The chief declined to specify the nature of the relationship between Peña and her accused killers. 

Police have not offered an explanation for why the four young women — two of them mothers — were fighting.

Faz told police that Peña had “arrived at her residence looking to start a fight,” according to a criminal complaint obtained by The Post 

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Surveillance footage later obtained by investigators showed Peña’s black Dodge pickup truck driving up to Faz’s house, where Cookie and Kitty arrived shortly thereafter.

The video shows Cookie fly out of the passenger seat of a black Chrysler 300 and confront Peña — while holding an object believed by cops to be a knife in her right hand, according to the complaint. 

Cookie is seen in the clip striking the mother in the back, where blood begins soaking her shirt, the document states. 

Mughshots of Amaya Cookie Diaz, Kyandra Renee Faz, and Kitty Mia Diaz seen in photo collage 3
Sisters Kitty Mia Diaz, 21, and Amaya Cookie Diaz, 19, and their pal, Kyandra Renee Faz, 21, allegedly knew Peña before the attack, according to the chief. City of Del Rio Police Department

That’s when Kitty and Faz jumped in — allegedly beating Peña before running away, according to the court record. 

Peña was reportedly driven to a local hospital by her nephew. She succumbed to the stab wounds at around 9 p.m. at a hospital in San Antonio.

Ramirez stressed that Peña’s decision to go to Faz’s house doesn’t suggest she bore any responsibility for the violence that followed, the outlet reported. 

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