The toddler had 21 broken bones before collapsing in Thornaby, Teesside in September
A mother and her boyfriend been jailed for a combined total of 50 years for the murder of two-year-old girl, Isabelle Welsh.
Alexandra Walker, 26, and her boyfriend Harrison Simpson, 22, were convicted of murder and child cruelty at Teeside Crown Court this week.
Simpson was sentenced to a minimum of 28 years and Walker was handed 22 years for murdering Isabelle Welsh.
He was also convicted of sexually assaulting the little girl, while her mother was cleared of this offence.
The two-year-old suffered weeks of abuse at the hands of Walker and Simpson, sustaining 21 broken bones before collapsing at her home in Thornaby, Teesside in September.
Isabelle had been a happy, healthy girl, the prosecution said, until her mother began dating Simpson last summer.
Walker had searched for Simpson on the sex offenders' register after he bathed the child without her permission.
Almost two weeks before Isabelle's fatal injuries were inflicted, Walker took the child to hospital with a broken leg, raising concerns among medical staff.
The mother then delayed returning to hospital for a check-up, jurors heard.
When Isabelle collapsed at home eleven days after the first hospital visit, Walker delayed ringing 999.
On September 13, the toddler sustained her fatal injury while alone with Simpson.
Paramedics found the two-year-old covered in bruises, with blood in her nappy.
The prosecution has previously said the pair were both culpable for Isabelle's suffering, calling it a "wicked" campaign of violence and sexual abuse.
Walker and Simpson blamed each other for the child's murder.
Ms Justice Norton jailed the child murderes for life with a minimum term of 28 years and six months for Simpon and 22 years for Walker, minus any time spent on remand.
The sentencing comes after Simpson was unanimously found fuilty of murder, cruelty and sexual assault of a child.
Walker was convicted of murder by 11 jurors against one and was found guilty of cruelty unanimously.
Nine jurors, all female, who heard the case were present for the sentencing, alongside family members who were supporting the child's father, Josh Welsh.
In a statement released after the verdicts on Tuesday, Isabelle's family said: "Isabelle should have had her whole life ahead of her, but she was taken from us in the most heartbreaking way.
"She was so loved and our lives will never be the same without her.
"While today's verdicts cannot undo the pain caused or bring Isabelle back, it does mean justice has been served.
