"Premonition" - Okay, I'm Confused (Again!) About the Calendars...

Okay, so I've watched "Premonition" like, five times now (don't judge!), and I still get hung up on the calendar thing. Sandras character, Linda, is clearly experiencing the week out of order, right? Monday is Tuesday, then it skips to Saturday, then back to Wednesday or something. But my question is, like, how does everyone else experience time? Specifically, I'm thinking about the scene where she's trying to warn Jim not to go on his trip on Wednesday. If she's experiencing that day as Wednesday, then what day is it for him and the kids? Are they all just living linear lives while she's bouncing around? It seems like they are. Like, when she sees the priest on Saturday, he doesn't act like he's already talked to her about Jim's death, which he did earlier in her timeline. So, does that suggest everyone else is just living one, normal, chronological week? Maybe she's literally the only one out of sync? It just makes my brain hurt thinking about it. And, if that's the case, then how does she even affect the timeline? Like, when she burns the insurance papers, does that really prevent anything, or is she just creating a different outcome within her own messed up week? I know the ending is supposed to be hopeful, but I still feel like I'm missing something crucial about how everyone else perceives time in that film. Anyone have any thoughts? Or am I just overthinking this (very likely!).