"Yet again… we emerged virtually unscathed."
The investigation has found that Livermore's family made repeated complaints to the care home and the Norfolk County Council in the lead up to her death, detailing how the man who eventually attacked her had been assaulting other residents.
Livermore's son Roy told the Eastern Daily Press: "The fact they are talking about 'getting away' with it in relation to the death of my mother is absolutely disgusting. It begs the question, what do they feel they got away with?"
The Norfolk and Suffolk Foundation Trust's chief executive Jonathan Warren said: "We are undertaking an investigation regarding the inappropriate comments made about the sad death of Doreen Livermore by a member of our staff.
"We take this very seriously and will be contacting the family of Mrs Livermore to give them our sincere apologies and offer them our support."