(Caveat: not a Dramatica expert)
First of all, I’d say it doesn’t have to focus on them specifically; it just has to be something that is part of their personal issues and generating conflict for them. (And for an IC, even more important is how this conflict impacts others.) It could even be as broad as “this country is truly Becoming a fascist state” or something like that.
For your second question about whether the MC/IC is the only one worried about it … When you say “it” do you mean Becoming in general? Or do you mean the specific thing that is part of the MC/IC’s personal issues, like “the transformation of core nature that my family will go through if we lose our place in society”?
I think in both cases the answer is no, they don’t have to be the only worried about it:
- If you’re talking about Becoming in general, if you set the IC Concern to that it becomes the Story Cost, so a bunch of overall story characters will be worried about or impacted by the cost they bear in terms of Becoming.
- If you’re talking about the specific instance like “her family losing its place in high society”, others could be concerned with that too but from their perspective it might look like something else –
The Future for example.
Anyway, I do think your example works, as long as her concern is really to do with
Becoming – the transformation of nature that her family will undergo or fail to undergo (rather than just external appearances). And as long as it really causes conflict for her, not just something she’s worried about.