I suspect a lot depends on who the protagonist is, and which parts you want to emphasize. If the detective is the protagonist, then the Goal is probably Obtaining--catch the killer, but it could be Understanding if the emphasis is on the investigation. Then the Consequence is Becoming, which I don't really see represented, but that's not super important because this story ends in Success.
If the old lady is the protagonist, then the Goal could still be Obtaining--she wants to get away with it; the detective wants to catch her, but it could also be Becoming if you emphasize the transformation the old lady feels after the murder and the transformation in the romance. Then this story has an already well-defined Consequence of Obtaining--the old lady goes to jail, the couple lose the chance to be together. This story has an Outcome of Failure (there's an argument that the transformations could be successful, but since one of the feelings was "liberation," it's not an argument I'd make).
I like the latter interpretation. The synopsis has a Failure feel to me, and I think Obtaining best captures the loss associated with the Consequences for both characters. I see the detective's suspicion as [Requirement: Conceiving], but I don't think the Forewarnings can quite be pinned down. That requires choosing a Domain for the MC (or IC), which I'm not sure we can do. It seems like she should be in Mind, but then again she did murder a man instead of reconsidering her ideology, which seems like a Do-er sort of thing, putting her in Situation and making Forewarnings of The Present.
This is a fun exercise. I'm curious to know if it has an intended solution, or if the point is to demonstrate how you can start with a synopsis, identify these storypoints, then extrapolate a few different forms the story might take?