A police complaints body is to manage an inquiry after a woman was reportedly fatally stabbed by a man whom she had earlier reported to police.
Donna Wilson died the day after being attacked at home
Donna Wilson, 30, from Burton, Staffs, died on 22 January after being stabbed. The body of her apparent killer, Shaun Clarke, 45, was later found at a park.
The Independent Police Complaints Commission (IPCC) will investigate the actions of officers before the deaths.
Ms Wilson's funeral was held in Winshill, Burton on Friday.
Took 'own life'
The 30-year-old had reported an assault and theft by Clarke the weekend before she was stabbed, Staffordshire Police has said.
She was stabbed in an attack at her home address at St Stephen's Court, Burton, on 21 January and died in hospital the following day, the IPCC said.
Shaun Clarke's body was found at Branston Water Park, Burton, on Monday, 22 January.
It is suspected the 45-year-old of Shakespeare Road, Burton, had taken his own life, the IPCC said.
It emerged last week that Clarke had served 16 years for an earlier murder.
IPCC Commissioner John Crawley said: "We will be seeking to establish what police response was made to Donna Wilson in the week leading up to her death.
"We will also be examining what contact officers had with Shaun Clarke prior to his death and what intelligence was available to the force about his background.
"I am aware that the Probation Service is also conducting a review of its responsibilities in regard to Clarke."
Ms Wilson was described as "an incredible, young, beautiful woman" in a statement from her family after the funeral at St Mark's Church, Winshill.
They said: "Life emanated from Donna - it could be infectious at times. But we are now without that gift.
"Donna had all the time in the world for anyone or anything and always saw the best in those she met, turning a blind eye to their weakness.
"We now have to recover as a family minus the single person who would have normally helped us to deal with such a tragedy."