The glittering chaos of Las Vegas couldn’t hide the darkness that unfolded in a single hotel room at the Rio Hotel & Casino, where 38-year-old Tawnia McGeehan allegedly ended the life of her 11-year-old daughter Addi Smith with a single gunshot before turning the weapon on herself—leaving behind a suicide note that has stunned investigators and shattered a community: “She must be mine.”

That haunting, possessive final sentence, scrawled in the mother’s handwriting and discovered next to the bodies, offers a terrifying glimpse into a mind consumed by desperation, obsession, and a decade of unresolved rage. Sources close to the probe say the note lays bare Tawnia’s fractured psyche in her last moments, hinting at a toxic belief that her daughter belonged solely to her—no shared custody, no ex-husband, no outside interference. The words echo like a deranged declaration of ownership, turning what should have been a joyful cheer competition weekend into an unthinkable tragedy.

It all began innocently enough: Tawnia and Addi, a talented, beaming cheerleader from West Jordan, Utah, traveled to Sin City for the JAMZ National Cheer Competition with Utah Xtreme Cheer. Addi was a star on the mat—energetic, dedicated, full of flips and smiles that lit up routines. But the pair never showed for their Sunday morning event. Alarm spread fast. Family and friends flooded 911 with welfare checks, frantic voices pleading for police to break down the door. Officers knocked around 10:45 a.m. on February 15, 2026—no answer, no forced entry, protocol followed. Four agonizing hours later, hotel security entered and found the blood-soaked horror: Addi dead from a gunshot, Tawnia from a self-inflicted head wound. Homicide detectives ruled it murder-suicide—Tawnia shot her child first, then herself sometime late Saturday night.

The suicide note, its contents slowly leaking through investigative channels, has ignited fresh waves of shock. “She must be mine” stands out as the most disturbing line, a possessive cry that screams unresolved custody trauma. Court records expose a brutal, nine-year war between Tawnia and ex-husband Bradley Smith, the girl’s father. Divorce proceedings kicked off in 2015, finalized in 2017 with Tawnia initially getting more parenting time. But peace never lasted. By 2020, a judge temporarily stripped her of custody, slamming her for “behavior on the spectrum of parental alienation”—deliberate attempts to poison Addi against her dad—and committing domestic abuse in the child’s presence. The court questioned her parenting stability, shifting primary care to Bradley.

The fights dragged on relentlessly: disputes over child support, school choices, exchange locations so heated the judge ordered parents to park five spots apart during handoffs to avoid confrontation. By May 2024, a final order granted joint legal and physical custody—one week on, one week off—with Tawnia retaining significant decision-making power over major issues despite the red flags. She was deemed a “fit and proper person” alongside Bradley, but the scars ran deep. Whispers suggest the long battle fueled Tawnia’s depression, even after seeming improvement.

Addi paid the price in silence. A diary entry reportedly penned by the girl—”That’s her dream, not mine”—hints at the pressure she felt, cheerleading perhaps more Tawnia’s obsession than her own passion. Autopsy findings compound the nightmare: multiple bruises on Addi’s body, evidence of sustained physical abuse linked to her mother. These weren’t cheer mishaps; they pointed to repeated violence, hidden behind the facade of a dedicated “dance mom.”

Tawnia’s own mother, Connie, has spoken out amid the grief, revealing her daughter endured “mean” texts from rival cheer parents in the weeks before the trip—blaming Addi for team issues, escalating tensions. “Cheer was her and Addi’s life,” Connie said. “I think something happened the day before that made her spiral.” Tawnia had purchased a gun over a year earlier, battling mental health demons that seemed to quiet—until they didn’t.

The cheer community is devastated. Utah Xtreme issued heartbroken tributes; teammates shared memories of Addi’s joy and spirit. Blue ribbons flutter across West Jordan homes and businesses, GoFundMe pages raise funeral funds, parents hug their kids tighter. Online, true crime forums rage: Was the custody war the breaking point? Did cheer rivalries push her over? Or was the possessive “She must be mine” the culmination of years refusing to share her child?

Bradley Smith remains largely silent, his pain private as he navigates unimaginable loss. The Rio room stays sealed, forensics dissecting every detail. No official motive released, but the note’s words hang heavy—a mother’s final, twisted claim over a daughter who deserved freedom, not possession.

As February 23, 2026, dawns, the Strip’s lights keep shining, oblivious. But in Utah, the silence screams: a little girl’s life stolen by the one who should have cherished it most. “She must be mine”—three words that explain everything and nothing, leaving a community forever haunted by what could have been prevented.