How does Gentleman prepare Sue for her part in the swindle in the novel, Fingersmith?

Gentleman creates a background story for Sue and writes to the young woman recommending Sue as her new lady's maid. Sue is carefully trained in the work of a lady's maid, outfitted appropriately with a single dress, given a new hairstyle, and sent off alone to Briar and the unsuspecting Miss Maud Lilly. Sue is to use the name Susan Smith so she cannot be traced back to her life in the London Borough.