The former duchess was last at a royal event when she attended the christening of their granddaughter Athena.
Sarah Ferguson has been photographed in Austria reportedly staying at a £2,000-a-night chalet in the Alps.
The King’s former sister-in-law was tracked down by The Sun newspaper to her bolt-hole months after last being seen in public.
Sarah has faced calls to speak to the US authorities about convicted sex offender financier Jeffrey Epstein after the release of millions of documents associated with him shed new light on their relationship.
Epstein has been the downfall of her ex-husband Andrew Mountbatten-Windsor, who was stripped of his titles by the King because of “serious lapses of judgment” over his friendship with the late paedophile.
Sarah Ferguson also lost her courtesy royal divorcee title and reverted to her maiden name, and recently lost the freedom of the city of York, after councillors voted unanimously to remove the honour over her links to Epstein.
She and Andrew were given the honour as a wedding present from York in 1987 during a visit to the city.
Sarah used to live with her ex-husband at his former home Royal Lodge but the King’s brother was forced to vacate the premises and will move into Marsh Farm on the King’s Sandringham estate in Norfolk.
The former duchess has also been forced to find a new home and could move abroad permanently.
Andrew and Sarah were last at a royal event when they attended the christening of their granddaughter Athena, the child of Princess Beatrice and her husband Edoardo Mapelli Mozzi.
