4) Carolyn Stoddard???
Yes… oddly there is a little bit of call for this… mostly from what I’ve seen in Marilyn Ross novels. However, I haven’t met any fans of it. I believe it was a flight of fancy because it’s even MORE blatantly obvious she’s a cousin and many of us go “GROSS!”
Would it even work? Well, they do say at fanfiction.net unleash your imagination. However, I think one would be pretty imaginative to get this to work out to anything resembling happily ever after.