This story was a mixed bag.
The bad: The "true nature" of Vanessa's character just didn't fit with the tone of the story it was like a sudden and jarring genre change that didn't feel right. Ultimately it had little impact on the story for me. Neither did the obvious revelation about Marv's talent. I mean Vanessa hammered on it over and over so, naturally, it was inevitable. If there's going to be a Man-In-Black aspect, there has to be some kind of fear, paranoia, something noir to it for it to work for me.
The good: Marv, the day hab, the talents, they had a mood that was put together just right. Very authentic feeling to me. The narrator did a great job really getting Marv across, and working the story at just the right pacing.
In conclusion:
This seemed like a story that had to good ideas, but they just didn't get meshed together well. I think this would make a better longer story with some action outside the dayhab, some world building, and some higher stakes. That isn't to say I didn't enjoy it, because I did! This is one of those cases where more would actually be more.
3¢