A Large Derby Figure of Britannia Connection to Mollie Hardwick, Writer

The example that I found on the internet that looks like this one states:

A large Derby figure of Britannia c.1770, her shield resting on the head of a recumbent lion, a dagger and bugle at her feet, raised on a low scrolled base
This came from another Sherlock Holmes collector's estate. I was told that she paid a lot to have it shipped from England and that it likely belonged to Mollie Hardwick, the English Mystery writer and friend of the Sherlock collector (they had also visited when the collector went to England). I did find it mentioned in one of the numerous letters written to the collector from Mollie Hardwick dated April 21, 1995:
(Speaking of her cat "Fenna"):

"She still does sentry go along the mantlepiece, so that I've had to move the Chelsea-Derby Brittania. There seems to be no way of stopping this worrying habit."
From the internet:
Mollie Greenhalgh Hardwick (7 March 1916 in Prestwich, Lancashire – 13 December 2003), also known as Mary Atkinson, was an English author who was best known for writing books that accompanied the TV series Upstairs, Downstairs.
She married fellow author Michael Hardwick in 1961 and together they co-wrote numerous books, mostly relating to Sherlock Holmes but also a number on Charles Dickens. The couple lived in a medieval house in a village in Kent. She died after a fire broke out at her flat in Muswell Hill, London in 2003.