NAPERVILLE, Ill. — A 40-year-old woman has been sentenced to 38 years in prison after being convicted of murdering her fiancé during a heated dispute about infidelity. The sentence marks the conclusion of a protracted legal process stemming from a domestic shooting that occurred nearly six years ago.
Rosa Lagrone was sentenced on August 5 by Judge Daniel Guerin following a jury’s guilty verdict on a charge of first-degree murder. Prosecutors stated that Lagrone shot Darnell Manns, 27, once in the torso on November 6, 2020, while the couple argued at her residence. The bullet pierced Manns’ arm and became lodged in his spine, leading to his death three days later despite medical intervention. Lagrone will be required to serve the full 38-year sentence before being eligible for parole.
The incident unfolded when Manns was packing to leave Lagrone’s home, where the couple was reportedly in conflict over his alleged relationship with another woman. The confrontation escalated quickly, resulting in the fatal shot that altered both their lives forever. Initial charges against Lagrone included attempted murder and other related offenses, but these were upgraded to first-degree murder following Manns’ death.
Investigators uncovered a disturbing detail in the aftermath of the shooting: Lagrone reportedly accessed Manns’ Facebook account to initiate a live video call with the woman he was purportedly seeing. In this call, authorities indicated that Manns could be seen on the floor, visibly injured. While this video played a pivotal role in the prosecution’s case, it also drew public interest for its harrowing content and implications regarding Lagrone’s state of mind during and after the incident.
Lagrone was arrested shortly after the shooting, but the protracted legal proceedings meant that it would take over five years for the case to reach trial. During this extended timeline, the legal status of the case changed significantly with Manns’ death, requiring adjustments in the charges brought against Lagrone.
The trial commenced in early February 2026 and lasted four days, with jurors deliberating for about two and a half hours before delivering a guilty verdict. DuPage County State’s Attorney Robert Berlin expressed that the jury’s decision held Lagrone accountable for Manns’ death, closing a critical chapter in a case marred by violence and tragedy.
At the sentencing, Judge Guerin emphasized the severity of the crime, noting the impact it had on Manns’ family and community. He imposed the maximum 38-year sentence mandated by law, reflecting the weight of the crime and its devastating repercussions. The DuPage County State’s Attorney’s Office underscored that Lagrone must serve her entire sentence without the possibility of early release.
Berlin characterized the incident as a stark example of domestic violence, reiterating the permanence of the consequences brought on by Lagrone’s actions. He extended gratitude to the prosecutors who worked on the case and stressed that no sentence could mend the loss felt by Manns’ loved ones.
The drawn-out nature of the proceedings and the final sentencing illustrate not only the complexities involved in cases of domestic violence but also the enduring impact such incidents have on families and communities. As Lagrone begins her prison term, it draws attention to the larger issues of domestic abuse and the legal systems’ struggle to navigate these sensitive cases.