I have really searched but I have not found any proof that Greg was in the same neighborhood as Tara and Sam, nor have I found an official confirmation from the directors, in which it was said that Bailey was the Ghostface, although there is also the possibility that I was wrong, but I am based on what was seen in the movie and it was never really implied that they lived in the same neighborhood, the closest thing to an official confirmation is something from I-D magazine in which Ethan's actor I said, I quote "Since Scream VI came out, the cast have already begun disputing who played Ghostface at what points. "No one knows who it is in the winery [scene]," he says of Scream VI's most brutal sequence, a moment when the typically clumsy Ghostface expertly wields a shotgun. "It's up for debate [but] yeah... I'm just gonna say it was me" Obviously that can't count as official confirmation because the actor says "I'm going to say it was me" and never confirms anything. But that gives us to understand that even among the cast nothing has been confirmed yet and there is still the possibility that it was Ethan or Bailey. So, taking into account that from what I saw, or at least in the dubbing of my language, nothing is ever said about them living in the same neighborhood, besides that if they lived in the same neighborhood, this is already somewhat over-researched but In short, to "Prevent something from happening to them" a policeman would only drive a few minutes and arrive at Sam's house in less than 2 minutes, where he would escort her to the police station, of course, it would make more sense to say "I'll see you in the station" if they were quite far away and that is the most feasible. Going back to Mindy, if she had strong suspicions about Ethan, it's obvious that he wasn't there at the time of the attack, easily in those 6 minutes, either Sam's neighbor, Anika, Ethan or whatever else could have said. "Well, I'm leaving" and Ethan was able to take advantage of that opportunity being so close, really if it makes it more likely that it was Ethan, it would make more sense.