It's always extremely risky predicting the behaviour of a woman. The term "crap shoot" comes to mind. I sure hope Sharon isn't reading this. In this instance, given the author is a man, it's safer to do so.
In my view, woman are largely problem oriented. So yes, a gay husband would definitely present a "problem". Men, however, are solution oriented. Given Caroline's behaviour so far, she is most definitely solution oriented. So while Caroline may not be too happy with her husband's sexual preferences, she'll make it work, to the point of protecting her husband's interests and reputation.
Sadly, as we all know, it's really women who run the world.