As one might recall, Diane is TECHNICALLY Susan's extremely distant aunt. I'm not actually sure how she'd be properly described? The distance of their connection is such that I don't think there's a practical way of putting it that anyone would normally bother with.
As for the next storyline, expect a whole lot of Susan (among others).
And no, it's not going to be called "Niece."
Story comics return Wednesday, March 1st.
I have a lot to sort out for the next storyline. What I have now is a mess of jumbled ideas in my head that may or may not all work together.
I'd have preferred to end the storyline on a Friday, but if I did, I'd be forcing it. It wanted to end here.
It's also a general policy of mine now to return from breaks on Wednesdays. I've regretted returning on Mondays before.
EGSNP will continue as normal.