This is the only birth registration that appears for Elsie one year either side of 1911
OXER, ELSIE MAY RIX
GRO Reference: 1910 J Quarter in IPSWICH Volume 04A Page 1055
This is the closest death for an Elsie in 1988
JACKSON, ELSIE MAY 1911
GRO Reference: DOR Q3/1989 in WESTON SUPER MARE (3071) Volume 22 Page 1140
The ones for 1988 are:-
JACKSON, ELSIE MAY 1898
GRO Reference: DOR Q2/1988 in BROMLEY (2221D) Volume 11 Page 1168
JACKSON, ELSIE MAY 1900
GRO Reference: DOR Q3/1988 in NEWARK (6882) Volume 8 Page 472
JACKSON, ELSIE MAY 1895
GRO Reference: DOR Q4/1988 in HARROW (2321) Volume 12 Page 1632
As you can see from the birth years, nowhere near your Elsie