I have been reading a copy of Moretonia the School Magazine for Morton House School where Elinor taught in 1923-1924. There is various mentions of Elinor in November 1923 through to June 1924, which confirms my believe, that Elinor went to Austria in 1922.
In 1921 Elinor was known as Miss Dyer at St Helen's School
From “Girls in Green”. A book commissioned by St Helen's wrote:
The Chalet School Connection;
In 1921 Miss Dyer, a typical 1920s spinster schoolmistress with rather untidy baggy clothes, arrived to teach English to the junior girls.http://www.hertfordshire-genealogy.co.u ... e-1924.htm
if you read through pages 3 & 6 you will see Elinor is still referred to as Miss Dyer( late 1923 early 1924),but on Page 1 (Editorial) Elinor signs herself as E. M. Brent Dyer (without the hyphen, June/July 1924)
A possible scenario
Elinor worked at St Helen's Northwood Middlesex 1921-1923; she is reported as applying for her Passport in July (4th) 1922.when she was still known as Gladys Eleanor May Dyer, it is confirmed by St Helen's that she did go on her holiday in the school holidays possibly whilst teaching at St Hildas (1921-1923) Elinor then worked in Moreton House School Dunstable Bedfordshire in 1923-1924 for a year, she then moved to Weston House, Fareham possibly 1925-1926, before moving back to Leeds in autumn 1926