Is this her real name, though, or just a nom de plume? I'm a bit baffled as to why, if the OP got the manuscript at an auction where the woman's furniture was also being auctioned, contact with the holders of the auction wouldn't furnish a lot of information. I'm sure they keep records, at least of the address of the possessions being sold, the particulars of the receiver of any proceeds, etc. Often, also, estate auctions are held at the estate.

Having the address of the woman's final home would make it possible to see if she was the owner of the house, and thereafter, who inherited it. I think that is all publicly available information.

Women's names are tricky; they may or may not be married names, and are often hard to trace.