How does the author use foreshadowing in The Belle's Stratagem?

Cowley has much to say about male-dominated, eighteenth-century society. As if to foreshadow the underlying message of her play, The Belle's Stratagem wears a mask resembling Farquhar's play, bending not only the play's title but its content. In her play, Cowley shrouds Letitia Hardy behind three masksindifference, vulgarity, and costume to upend eighteenth-century courtship, exposing the oppressive nature of marriage in a male-dominated society.