"Milady put her charming blond head out at the window, and gave her orders to her maid.

The latter--a pretty girl of about twenty or twenty-two years, active and lively, the true soubrette of a great lady--jumped from the step upon which, according to the custom of the time, she was seated, and took her way toward the terrace upon which D’Artagnan had perceived Lubin. "

soubrette
n.
5Fr < Prov soubreto < soubret, affected, sly < soubra, to put aside, exceed < L superare, to be above: see SUPER36
1 in a play, light opera, etc., the role of a lady‘s maid, esp. one involved in intrigue, or of any pretty, flirtatious, or frivolous young woman
2 an actress who plays such roles