Thanks for the comments, y'all. I'm glad I haven't scared everyone off with my affinity for long and complex stories.
Robin is indeed scary. You'll see part of the reason why in the next chapter (up soon). And Clark bringing such a woman into his home when his wife is dealing with some crushing emotional burden? Yeah, even I can see that's not a good thing.
Kara isn't necessarily related to Clark. Her dad was a "professional associate" of Clark's father's brother, which means they might have been close friends or that Kara's dad was a janitor for Clark's uncle's business. We don't know yet.
And why is Clark taking such an interest in this woman? Can't be romantic, can it? Naah! Must be something else.
We'll see that soon, too.
