This may be the artist Emily Grace CRESWELL from Leicester, who specialised in miniature portrait painting. She is listed in Johnson & Greutzner, and is possibly, by dates, an exhibitor at the time, despite addresses in Leamington Spa (1926) and London (1933).
An artist of this name exhibited a 'homely study' at NAG in July 1932, when a special show of Thomas Cooper GOTCH's paintings was being held in memory of the artist, then recently deceased. No other E G Cresswell or Creswell exists in the records, though there is an American painter, Elizabeth Cresswell (later born and later arriving in France) listed in Benezit.
Specialised in miniature portrait painting
NAG July 1932
Cornishman 6 Jul 1932
Hardie (1995) 100 Years in Newlyn: Diary of a Gallery;
(2009) Artists in Newlyn and West Cornwall