After such flattery from Brigidmac, I had better come up with a structured response
(Hard to believe that the Fellman odyssey was back in 2014/5)
I assume that you have ordered certificates for deaths in 1911, 1916 and 1919. I have the following corresponding burial information:
1911: 25 Jul, age not reported, at Plashet Jewish Cemetery, East Ham
1916: 11 Apr, aged 70, at Edmonton Federation Cemetery
1919: 15 Jun, aged 69, at Edmonton Federation Cemetery
Interestingly, the ages quoted in the burial records differ from those that appear in the civil registration index.
The original burial registers of the Edmonton cemetery are held in the London Metropolitan Archives.
Are you certain when Annie died? There are three or four possibilities.
Annie's maiden name in its anglicised form appears to have been SLOTKY. In 1862, a Bernard Slotky married Matilda Solomons. I have identified the births of 10 children, but can find only one census entry. Bernard and a 15-year-old son, Abraham, were recorded in Westminster in 1891. Bernard and Matilda appear to have died in Brighton in 1911 and 1921 respectively.
I am fairly confident that the original surname appears in the records as SLODKI, or SLODKA for women. You'll find quite a few records for these surnames in JewishGen starting in the 1820s. SLODKI is a documented Jewish surname and is believed to be derived from the Polish word for "sweet".
In 1879, a Jacob Slotky married Esther Martin. They were still alive in the 1939 and recorded in the "census" of that year.
The 1901 census recorded Samuel Slodki, aged 39, with his brother, David, aged 26, in Mile End Old Town.
SLOTKI/SLODKI are sufficiently unusual in the UK to make it a distinct possibility that Annie was related to the aforementioned men who were all born in Poland. Maybe by researching them, you might find their places of birth.