Barbara Vavalidis had been scheduling a carefree retirement after decades of hard work and a busy family life.
Instead she is mourning the loss of her partner of 45 years, the papa of her two sons.
Stefanos Vavalidis died in London in January 2016, aged 69.
He had fallen ill while on holiday abroad in May 2015, and expended the past eight months of his life in hospital.
His widow is suing Dr Peter Wheeler, a private GP who was the family’s trusted physician for more than 30 years, alleging he was poisoned through negligence.
Mrs Vavalidis’s lawyer from Leigh Day solicitors said it was one of the worst cases he had known in more than 30 years.
Dr Wheeler was medical doctors of Diana, Princess of Wales, and was the man who determined their own bodies after she died in a gondola clang 20 years ago.
In his apology to Mrs Vavalidis’s civil contend, due to be heard at the High court next year, Dr Wheeler has admitted he was in breach of their official duties by failing to properly check his patient by ordering the full blood tests, recommended in the standard medications book of facts for all doctors.
BBC News has established that Dr Wheeler is under investigation by the General Medical Council( GMC ), which regulates the UK’s doctors.
And the Metropolitan Police has confirmed it is looking into individual complaints received about the lawsuit.