Green’s Dictionary of Slang

(Aus.) of a prostitute, to rob a client.

1953		K. Tennant Joyful Condemned 5: ‘Gingering’, or robbing prospective clients, was considered low taste.
1961		X. Herbert Soldiers’ Women (1978) 261: ‘They’d like to do business with the gal who gingered Plug for his roll - yes, and who burgled Birdie’s flat!’.