Marriage in "Chaste Maid"

In all four of the play’s plots, the action is centered around the most extreme form of capitalism: the commercial exchange of sex and the commoditization of the human body (throughout the play, children are seen as a means towards securing wealth rather than progeny; in I.i, the Welsh woman is referred to as “ewe mutton” and Tim suggests his sister be “sold to fishwives” in IV.iii; even an infant is – in the otherwise extraneous “Promoter” sequence of II.ii – conflated with a piece of veal or mutton). From the very start of the play, married women and their wittol husbands arrange the exchange of bodies for social preferment and wealth. And yet, at the very end of the play, it is suggested that the Welsh woman’s sexual “dishonesty” might be “cured” by her being married: “Sir, if your logic cannot prove me honest, / There’s a thing call’d marriage, and that makes me honest.” (V.iv) Is this merely tongue in cheek? All of the examples of marriage before hers depict blatant marital dishonesty. Are we meant to take her at her word and believe that this particular marriage will somehow establish “normative” sexual behavior (where all the other marriages have not only failed to do so, but have actually been means to further transgressive sexual behavior)? Or is this Middleton setting us up for a final laugh at the naïve and unsuspecting bride-to-be’s expense?