FreeBMD (.org.uk) is showing a few possibilities for her marriage:
March qtr 1903
Portsmouth Registration District vol 2b, page 792
Nash, Elizabeth Maria
+ and on the same page +
Curtis, John
Russell, James
December qtr 1907
Portsmouth Registration District vol 2b, page 961
Nash, Elizabeth Maria
+ and on the same page +
Evans, John Henry
Stagg, Frederick George
September qtr 1919
Portsmouth Registration District vol 2b, page 1621
Nash, Elizabeth M
Porter, Frederick J M
(Spouse names only appear from 1st July 1911)