One more thing

It may interest you gentlemen to know that throughout much of the history of civilization, chastity has only been valued as a commodity in wives, who were then considered as chattels for the purposes of breeding legitimate heirs, and nothing else. These wives were rarely esteemed for their companionship; they were not loved or cherished as individuals, and they were chronically betrayed by their husbands, who often brought home putrid sexual diseases as wedding presents.

The women with whom these husbands betrayed their wives, if they had sufficient income and social standing, were known as 'courtesans,' or in Japan, as 'geishas.' These women had all the elegance of wit, education, sophistication and experience that their wives lacked, and their services cost a fortune. The commodity value of a courtesan was actively enhanced by the number and social standing of her previous lovers; any number of nobles would give half their estate for a chance at a tryst with a king's mistress.

The point that Pretty Lady is making is not only that temperamentally, she has much more in common with a courtesan than with an illiterate brood mare, but that reducing a woman's value to that of a commodity is not conducive to mutual affection and security any more than flagrant promiscuity. Also that sexual chastity is not inherently a desirable thing in a man's eye; also that wit and sophistication have their value in the sexual economy.

Also, that much of the petty snarking to which Pretty Lady is occasionally subject comes across as nothing more than plebian sour grapes.