In the quiet border town of Del Rio, Texas, on the afternoon of June 25, 2026, a seemingly ordinary day turned into one of the most shocking and senseless acts of violence the community had ever witnessed. Caroline “Caro” Peña, a 32-year-old mother of five known for her warm smile, infectious laugh, and unwavering devotion to her children and friends, was brutally attacked in broad daylight on a busy street near the 800 block of East 10th Street. What unfolded next, captured in chilling detail by home surveillance cameras and witnessed by bystanders, left investigators and residents reeling.

The primary attacker, 19-year-old Amaya “Cookie” Diaz, approached the victim with a knife and stabbed her repeatedly in the back as blood soaked through her shirt. Her older sister, 21-year-old Kitty Mia Diaz, and their 21-year-old friend Kyandra Renee Faz joined in the ᴀssault before all three fled the scene. Caroline was rushed to a local hospital by a family member and later airlifted to San Antonio, where she fought for her life for approximately seven hours before succumbing to her injuries around 9 p.m. The speed with which police identified and arrested the three women was thanks in large part to clear surveillance footage that showed every terrifying moment from the arrivals to the stabbings and escape. Yet what truly stunned detectives and the public alike was the behavior of the suspects during their arrests later that same afternoon.

Video recorded by a bystander outside the Diaz home showed Kitty and Cookie being led to patrol cars in handcuffs, both displaying unsettling smiles and apparent nonchalance. Cookie even appeared to giggle and sarcastically tell the person filming to stop recording. There was no visible remorse, no tears, no signs of the gravity of what they had just done to a mother of five in front of witnesses on a public street. Court documents later confirmed that Amaya “Cookie” Diaz was the one who wielded the knife and delivered the fatal blows.

All three women, who knew the victim, were charged with first-degree murder and held on $5 million bonds each. Friends and neighbors in Del Rio described Caroline as a giving person who would help anyone, making the public and callous nature of the attack even harder to comprehend. The viral arrest footage sparked widespread outrage, with many questioning how anyone could smile after taking a life in such a vicious, daylight manner. Investigators have described the case as one of the most disturbing they have handled, not only because of the brutality but because of the complete absence of emotion shown by the young women involved. As the investigation continues and the community grapples with the loss, the question of what could drive three young women who knew their victim to commit such a public and savage act remains unanswered, leaving a lasting chill over the entire region.