Paint & rouge *can* be an indicator, but it was also v. high society French (so fashionable if you could get away with it). Here the plucking of the rosebud & 'temptation' in the title are key clues – pleasure gardens in general & Bagnigge in particular were known for sex workers

Obviously it's a bit subjective but the way the women are just hanging about slightly apart, one gazing out as if in invitation, just screams courtesan rather than elegant companions talking a walk