Honestly, I've seen a few takes on this and I think a lot of folks are missing the core trigger: it's not the dramatic 'shining' itself, but the silence around it. The lead character’s quiet success isn't a loud revenge tour; it's her building a full, independent life without them. The real gut-punch for them isn't seeing her win awards, it’s overhearing a mutual friend casually mention her new gallery opening, and realizing they weren't even on the guest list. That kind of unacknowledged, moving-on distance is what really gets under the skin.
For the son especially, I found his regret sparked earlier, in the smaller domestic moments he used to ignore. Him trying to replicate a simple soup she always made when he was sick, and failing miserably, hit harder than any big confrontation. It's the mundane comfort he took for granted becoming permanently absent. The husband's arc feels slower, more about the erosion of his own self-image—watching her thrive publicly forces him to confront that he wasn't a benevolent patron, but an obstacle she quietly surpassed.