How interesting!
One thinks that the Cocks/Nicholson family maybe paid for such a headstone, or made it possible. As merely a servant Ann would probably (though we cannot assume) have stretched to such a lovely tombstone.
Burial records will be under individual Parish records, for those buried in Churchyards. Once churchyards were full and municipal cemeteries were used, then records are often with the cemetery or with the appropriate council.
The question still remains - where did Ann go after Reginald Cocks and Amabel Richardson died? and from there, where did she die?
You could get the death cert for the Crediton death, but will be hard to tell from it if it is "your" Ann or not, as we do not know who she was living with so who would be a likely informant. Likewise the Eton one.
I wouls be tempted to get a copy of Amabels Will myself, just to see if she left a legacy to her dear servant and friend, Ann Fry, and if it gives any more info about her. But I am approaching from a Family Historian point of view, rather than an interest in the headstone! However, I think to find where the headstone is, you do need to find where Ann was when she died, and so the two are very closely linked!
