Might this be her death, the only Emily from 191? (her marriage) to 2007 (end of index, currently):

First name(s) EMILY
Last name LONGBOTHAM
Gender Female
Birth day 17
Birth month 8
Birth year 1880
Age -
Death quarter 2
Death year 1970
District LEEDS
County Yorkshire
Volume 2C
Page 881
Country England
Record set England & Wales deaths 1837-2007
___________________

There are No Emily Keay births on FreeBMD from 1876 to 1890 inclusive.

In the 1911 census there was an Emily Keay in Stoke on Trent, but she was the wife of a William Henry Keay with three children.  There was another married Emily Keay in Staffs and a 20 year old unmarried one in Wednesfield, Staffs.

Not a lot further forward...
___________________

Their marriage registration date:

Surname First name(s) Spouse District Vol Page
Marriages Dec 1917   (>99%)
Keay Emily Longbotham Stoke T. 6b 415
Longbotham Mark H Keay Stoke T. 6b 415
_______________