Jemma Mitchell, 38, shot Mee Kuen Chong, also known as Deborah, in the head with a handgun at her home.
She has been sentenced to 34 years behind bars for her callous crime.
The human dissection expert then used her skills to dispose of the body of the Malaysian citizen, who had lived in Wembley, north London, for 30 years.
Mitchell’s motive for killing the 67-year-old was simple: money; in fact hundreds of thousands of pounds.
The Old Bailey was told the two women knew each other and were “friends” but had recently been in a fight over money.
The prosecution alleged that the defendant had planned to kill the divorced woman, who was recently diagnosed with schizophrenia after writing letters to the then Prince of Wales and Boris Johnson.
Mitchell allegedly forged her will in order to inherit most of her estate, which is worth more than £700,000.
She came up with the covert scheme after Ms Chong gave up giving her £200,000 to pay for repairs to her dilapidated £4m family home, she was told in court.
An Old Bailey jury ruled for seven hours to find Mitchell guilty of murder.
Chief Investigating Inspector Jim Eastwood, who led the investigation, described it as a “highly despicable crime”.
He said: “The motivation for Jemma Mitchell’s actions was money and she showed a significant degree of planning and calculation as she attempted to cover up her horrific actions. The cold facts of this case are shocking,” reported Metro.
Ms Chong was first reported missing on June 11 last year, and Mitchell claimed she went to visit family friends “somewhere near the ocean” because she was feeling “depressed”.
Tourists found her body 200 miles away in a Devon forest two weeks later, while her head was discovered in nearby bushes a few days later.
The trained osteopath, who boasted online of his award-winning skills in human dissection, had denied having anything to do with the gruesome crime.
During the trial, jurors saw footage of Mitchell arriving at Ms. Chong’s home with a large blue suitcase, which presumably contained her murder kit.
Five hours later, she left the property dragging her suitcase, which seemed much larger and heavier.
Reconstructed CCTV footage of her showed her walking through streets and a grassy verge for two hours, during which time she called various taxi companies nine times before they picked her up and dropped her off at her address.
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