A mother and her boyfriend have been found guilty of murdering two-year-old Isabelle Rose Welsh following a harrowing trial in the UK.

Alexandra Walker, 25, and Harrison Simpson, 22, were convicted after jurors heard evidence about the treatment Isabelle endured in the weeks leading up to her death.

Simpson was also found guilty of sexually abusing a child, while both defendants were convicted of child cruelty.

The case was heard at Teesside Crown Court, where prosecutors described a prolonged pattern of abuse rather than an isolated incident.

The court heard that Isabelle had suffered serious injuries over a period of time before ultimately sustaining a fatal head injury.

Prosecutors argued that the injuries were deliberately inflicted and that the circumstances surrounding the child’s death could not be explained as an accident.

The trial also heard concerns raised by Isabelle’s grandmother, Claire Walker, who had reportedly become increasingly worried about the toddler’s health in the days before her death.

She described noticing changes in Isabelle’s condition and said she had become concerned about the child’s wellbeing.

The court was also shown footage of Isabelle from happier moments before her death, including images of the little girl playing outside.

Those moments offered a stark contrast to the events that would later unfold and served as a reminder of the young life that was lost.

Prosecutors told the jury that the abuse had continued over a period of weeks.

They argued that the responsibility for Isabelle’s injuries ultimately lay with the two adults who had access to her during that period.

Both Walker and Simpson denied the charges brought against them during the trial.

However, after considering the evidence, the jury returned guilty verdicts against both defendants.

Isabelle’s father, Josh Welsh, spoke outside court following the verdict.

He said the outcome meant a great deal to him and his family, describing his daughter’s death as something that had shattered their lives.

He also expressed his belief that the people responsible should receive the strongest possible sentences.

For Isabelle’s loved ones, the verdict brings the conclusion of a painful legal process—but it cannot undo the loss of a child who was only two years old.

The case has also highlighted concerns about how vulnerable children can be protected when warning signs of abuse emerge.

Isabelle’s family had reportedly raised concerns about her condition before her death, making the circumstances surrounding the case even more painful for those who knew her.

Walker and Simpson will be sentenced at a later date.

Until then, Isabelle’s family is left to grieve while remembering the little girl she was beyond the tragedy that ultimately took her life.

Her father said the verdict represented justice for his daughter.

For those who loved Isabelle, that justice can never replace her—but it may provide some measure of accountability for what happened to her.