I do not find your anecdata of one to be compelling. Neither should you.
I suspect that she is already on a number of boards. Why? Cause she’s a badass.
Statistically speaking, she is among the 50.47% of Americans who are women. And if she's on the board of a publicly traded corporation, she's among the 21.2% of female board members. So statistically speaking, she's 2 1/2 times as badass as any given man doing the same job.
That might be why doubling female participation in board membership increases profits. By bringing more women on board, corporations are effectively being forced to hire competent individuals, as opposed to whatever schlubby friends Joe made at Wharton.
As a private citizen, do I have a right to give a fuck how you run your corporation? Fuck to the yes I do. You operate within the regulations of a federal organizing body paid for by me. More than that, my retirement has been given over to the performance of said-same publicly-traded companies. And what I know is that (A) Europe has vastly more stringent requirements for female participation (Norway has required 40% female board members for ten fucking years now) (B) I can't think of a more tone-deaf concern than the braying of rich white men outraged that their boys club might have to put up with skirts, particularly when half of America is dealing with the fact that Date Rape Dougie is being ramrodded down their throats by the highest electoral body in the land.
Of course your friend is opposed to this. She's already a board member. Therefore everyone knows she's fuckin' 1337. Should the law pass? OH SHIT suddenly she's only twice as competent as you are, rather than 2 1/2 times. You see this whenever elitism comes down; as soon as they recentered the SAT back in 1994 millions of fuckin' 19 year olds were stomping around in high dudgeon maintaining that they got a 550 verbal "back when that meant something." It comes down to whether you'd rather punch down or up - should you give a shit about the people secure in their position because they busted their ass or should you give a shit about the people who will never make it because they can only bust ass twice as hard as any given man?
'cuz fuckin' hell yo we both got daughters and neither one of them should have to be 2 1/2 times as good as your son in order to achieve the same level of success.