Nellie Walcroft was not married in 1920

I am the granddaughter of Lucy and Carl Land, Nellie Walcroft's sister and brother-in-law.  I recently found new information on Nellie Walcroft. 

In the US 1920 it appears that she was counted twice and both times she was single. 

On Jan. 11, 1920 she was listed as living with my grandparents, my uncle, my mother and another sister of theirs, Eva Griffin on Wood Crest Ave. (the Bronx or Brooklyn?). Maybe she was visiting for the holidays.  It lists her as being 40, single and a cook and having immigrated in 1917 (maybe she returned to England sometime after 1912). 

On Jan. 29/30, 1920 she is listed as a cook in Manhattan in Henry Schniewand's home in Manhattan.  It states that she was 44 and had immigrated in 1912. 

There are a couple of things in the book "Clear to America by Titanic & Beyond which lead me to believe that "Johnnie" is not Nellie Walcroft but a third person, so I don't think that Nellie married in 1913 as she was listed as still being single in 1920 at age 44 (or maybe 40). 

I don't know if this information answers any questions or just creates more.  I'd be interested in hearing what else others might know about Nellie Walcroft.  I'd still like to know where she is buried.  My father states that he remembers visiting her in New York around 1946.  Both he and my uncle think that Nellie was married but they have no names or information about her husband.

Pam Cowan