In 1911, Winifred was living with her parents and seven older siblings in Enfield, Middlesex. 
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Corrected middle name from Emily to Edith and changed birth year from 1902 to 1910. There was no one with a mother's maiden surname as Mitchell born in that time frame and the 1911 census reflects what I have found - Vincent-2548.
↑ England & Wales General Register Office, GRO Online Index - Birth (https://www.gro.gov.uk/gro/content/ : accessed 29 January 2021), database entry for Barber, Winifred Edith (Mother's maiden surname: Mitchell), GRO Reference: 1910 S Quarter in Edmonton, Volume 03A Page 705.
↑ "England and Wales Census, 1911," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:XW41-J3D : 5 July 2019), Winifred Edith Barber in household of Sydney Amass Barber, Enfield, Middlesex, England, United Kingdom; from "1911 England and Wales census," database and images, findmypast (http://www.findmypast.com : n.d.); citing PRO RG 14, The National Archives of the UK, Kew, Surrey.