Who is Ethel Le Neve from Thunderstruck and what is their importance?

Ethel Le Neve is Crippen's secretary and love interest. She is employed as a typist in the company where Crippen works. Attracted to the quiet doctor, Crippen eventually wins her over with his kindness and apparent unhappiness in his marriage. Ethel moves in with Crippen after Belle disappears, and when he proposes that she should dress as a boy and leave the country with him, she willingly agrees.