A British mother is demanding Texas prosecutors reopen the investigation into her daughter’s shooting death after a grand jury ruled the father’s gunshot an accident following a Trump argument.

Lucy Harrison, 23, was shot once in the chest on January 10, 2025, at her father Kris Harrison’s home in Prosper, Texas. Her mother, Jane Coates, is pressing the Collin County District Attorney’s Office to meet with her and revisit the file after a grand jury declined charges.

Coates wants investigators to sit with the findings from independent experts and a British inquest that rejected the accident story. She is traveling from the United Kingdom to the Dallas area to make that case in person.

The Daily Mail reported that the Prosper Police Department has already said it will not reopen its own investigation. The case went to the district attorney and then to a grand jury, which declined to indict on manslaughter or criminally negligent homicide and treated the death as an accident.

Boyfriend heard the fight, then a single shot

Sam Littler, Lucy’s boyfriend, had traveled with her to the United States. He later described a major argument that day about the impending inauguration of President Trump.

Fox News reported that Littler told the British inquest the dispute turned heated before Kris Harrison led his daughter into a bedroom to show her a Glock 9mm handgun. Littler said he heard the shot and ran in.

Littler recalled the scene in stark terms.

"I remember running into the room, and Lucy was lying on the floor near the entrance to the bathroom, and Kris was just screaming, just sort of nonsense,"

Kris Harrison, 52, told police the pistol went off as he pulled it from its container. Bodycam footage captured him denying he had been drinking. Reporting later described him as having drunk a 17-ounce carton of white wine that day, and the British coroner called him a functioning alcoholic.

Families left to bury young people after sudden gunfire often face long fights for clear answers, a pattern also seen when James Copenhaver died years after the 2024 Trump assassination attempt.

UK coroner called the chest shot unlawful

A UK inquest reached a sharply different conclusion from the Texas grand jury. Senior Coroner for Cheshire Jacqueline Devonish determined Lucy died by gross negligence manslaughter and concluded her father unlawfully killed her.

Devonish stated the mechanics plainly.

"To shoot her through the chest whilst she was standing would have required him to have been pointing the gun at his daughter, without checking for bullets, and pulling the trigger,"

Retired Texas homicide detective Craig Miller reviewed the account and rejected the idea of a spontaneous discharge. He pointed to the wound path straight through the center of the chest rather than a side angle that might fit a mishandled draw.

Miller put it directly.

"Guns just don’t go off. The only person who could have fired the gun is the dad."

He added another question about the father’s shifting statements.

"When a person lies and is inconsistent with their testimony, those are important facts for the police to look at and consider,"

Political arguments can turn ugly, yet they do not erase basic rules of firearm handling when alcohol is in the mix. Separate reporting has tracked other threats and security burdens around the Trump family, including how Barron Trump has lived under heavy protection.

Mother wants investigators to face the open questions

Jane Coates has said she is not chasing headlines. She wants a meeting and a full accounting.

"I simply want the truth about what happened"

She has also described the personal cost.

"There isn’t a day that goes by when I don’t think about Lucy and everything she should have had in front of her"

Coates asked the public to remember her daughter as more than a case file.

"I want people to see her as a person, not just as a case. She was funny, kind, loving and full of life. She had dreams. She had people who loved her deeply. She deserved a future."

She wants the people who handled the death investigation to hear what outside experts have already told the family.

"I want the people responsible for investigating her death to sit down with us and listen to what we have been told by independent experts."

Sudden fatal shootings leave the same hollow space for relatives whether the setting is a Texas bedroom or a workplace dispute, as in the St. Paul case that left three apartment staffers dead.

Lawyer says key forensic steps remain unanswered

Coates’ lawyer, Radd Seiger, said the family came to Dallas seeking justice and has kept the door open for prosecutors. He argued the accident explanation was never properly stress-tested.

"The authorities say the investigation was thorough and complete. But where is the evidence that the accidental discharge explanation was properly tested?"

Seiger listed the missing pieces he says still have no public answers: scene reconstruction, toxicology on a man described as drinking early that day, gunshot residue work, full forensics, and ballistics. He said officers reportedly smelled alcohol on Harrison’s breath even as the bodycam showed a denial.

"Where is the evidence showing that every obvious line of enquiry was pursued? The authorities simply cannot, and so far will not, answer these questions."

Seiger framed the next move as belonging to local officials.

"All eyes are on them, and rightly so. The ball is in their court. We are going to keep asking for the meetings,"

The New York Post reported that Kris Harrison told police the gun “just went off” as he lifted it, while experts continued to dispute that the trajectory and circumstances matched an accident. A U.S. medical examiner’s homicide ruling has also sat alongside the grand jury’s decision not to charge.

Texas has seen other abrupt deaths that force families and officials into hard after-action reviews, including the Fort Hood Apache crash that killed two soldiers near Salado.

A Prosper Police Department spokesperson said the matter was referred to the Collin County District Attorney’s Office and presented to an independent grand jury that ultimately declined to move forward with criminal charges. Kris Harrison, through an attorney, has said he fully accepted the consequences and will carry the weight of his daughter’s death for the rest of his life.

Coates and her lawyer say refusal to meet does not end the questions. They are still asking for the sit-down, the forensics, and a second look at a chest wound that a British coroner and a veteran Texas detective both said does not fit a gun that simply fired itself.

When alcohol, a loaded handgun, and a fatal chest shot meet in the same room, a grieving mother is right to demand that every basic test be shown, not just declared done.