Maybe! That's something I also thought but still kind of feel like it was before the story for a couple reasons.
At the start of the game after we return home from school we receive a text from an unknown number apologizing for earlier. We didn't know who it was so they just dropped it. After the 7 Minutes mention I figured that maybe she asked for his number and never did anything with it til that issue with Shelby at the start.
Then there was that little bit with Skylar at the party (maybe the same party?) before the game started.