托爾貝和南德文郡成年人夥伴關係報告中沒有指明這名婦女的身份，該報告說，她將兇手視為 "孫子 "般的人物。
兇手在審查中只被稱為 "M先生"，在受害者發現他從她那裡偷了幾千英鎊後，他攻擊了受害者，被稱為 "Ella"。
這名35歲的男子在被獨立護理機構Complete Quality Care Ltd作為她的唯一護理員之前，沒有任何護理方面的工作經驗。
托爾貝和德文郡保障成人夥伴關係的獨立主席Paul Northcott說，該報告 "強調了一些我們作為夥伴關係需要實施的學習領域，以防止這種悲慘情況再次發生"。
The woman, who is not identified in the Torbay and South Devon Adults Partnership report, had seen her killer as "a grandson" figure, it said.
The killer, only referred to as "Mr M" in the review, attacked his victim, referred to as "Ella", after she discovered he had stolen several thousand pounds from her.
The 35-year-old had no previous employment experience of care before being taken on as her sole carer by Complete Quality Care Ltd, an independent care provider.
The report said he was convicted of a number of criminal offences between 2003 and 2007, including Actual Bodily Harm (ABH), and was involved with police over disorder and drug possession between 2014 and 2018.
He was also reported for domestic assault on several occasions during those years, but no formal action was taken.
The report said the police did not disclose the domestic abuse callouts because there had not been "significant violence", it was not committed against a vulnerable person and the activity relating to the DBS check was not in the individual's own home.
The review found information withheld by the police "would have allowed the provider to make a more comprehensive assessment of the risk Mr M may have posed as a care worker".
The review made several recommendations to some of the seven health and social care agencies and charities who were involved in her care.
"Good practise" was noted as all agencies moved quickly to inform the police when Mr M was suspected of financial abuse and Complete Quality Care immediately suspended him from duty.
Paul Northcott, the independent chair of the Torbay and Devon Safeguarding Adults Partnership, said the report "highlighted a number of areas of learning that we as a partnership will need to implement to prevent such tragic circumstances from happening again".
"Those lessons that are contained in the report are wide ranging and not confined to one agency, but point to a number of improvements that can be made nationally and locally," he said.