absolutely. every time I feel like i'm just starting to figure out how to look at it, I instead end up feeling like i understand something else a little better and then totally lose any progress I thought i was getting in the RS area.
No idea. But i'm going to try to walk through it to see if anything comes of it.
Way I understand it, it would be difficult to give a satisfying answer because, like all things in Dramatica, the answer is probably something like "You can handle it any way you want, making one or the other the subject or object, both, or neither, as long as you handle it properly."
That said, here are a few desperate attempts to illustrate this in various ways. I don't know if any of them are really accurate.
1. Becca and Devin have a scorched earth policy aimed at others and implement it as a team. This policy drives a wedge between them as one gets overly into it and wants to go after everyone that's ever done them any little injustice while the other feels that perhaps they've been taking things too far and should tone it down. The relationship grows closer or further apart because of this.
2. Becca has a scorched earth policy against Devin, but Devin just wants to mind his own business. This builds the relationship between them by maybe A.) turning them into bitter rivals that thrive on getting under each others skin, or B.) creates a weird sort of tension that leads to the two of them falling madly in love with one another.
3. Becca and Devin have a scorched earth policy against each other. I suppose A and B from above could work just as well here, but I'll try for a C.) their mutual desire to utterly destroy each other manifests in a super competitive nature within the...office? space station? Shire? Pirate ship? Anyway, this competitive nature between them looks to everyone around them not like two people trying to destroy each other, but two people who want to be the absolute best they can be at whatever they do. It ends up inspiring everyone around them to work harder which then leads to whoever is in charge above Becca and Devin to notice and decide that the best thing for the company (space station, whatever) is to make them co-managers, or team leaders, or captains or whatever, again, forcing them closer together.
4. Neither Becca nor Devin have a scorched earth policy. Someone else has one (which may or may not be aimed at Becca and/or Devin) which has the effect of causing B and D to turn away from or toward each other because of how their relationship is affected by this other persons scorched earth policy.
Okay, so the third one got a bit long, and a bit lost in the storytelling. I guess #2 two would be closest to what you're going for with Becca doing the scorching and Devin not. I would agree that it doesn't require both characters to be scorching the earth because, as you know, it's not about the MC vs IC as at least one version of the software lists it, but it's about the relationship between them. Imagine a couple that seems genuinely happy until one finds out the other has been cheating. It only took one to screw up that relationship. Imagine someone pursuing a relationship with someone else who doesn't even know this person exists, but they eventually get married. Or maybe a couple ready to get divorced when one decides to give it one last go and ends up sweeping the other off their feet again. Only took one to affect the relationship, but that was enough to make it an issue of concern for/to/within the relationship.