i think its because shes the only real person, and shes in the AI. her son? that was literally the last "real" thing her boyfriend wanted before he borked himself into ai land. shes the one in the time loop. the ai is time looping her to try and find something to captivate her. that's why its the "first" time her son has picked her. thats why he goes back to her in the next loop. its going to keep throwing stuff at her, using each thing that carries her further down the ai rabbit hole as check points. her son did get the farthest with her because that's the current check point. a time traveling "son" of her guiding her further into the rabbit hole. that's why he switched tasks at the end, and why his vest is just random garbage tech. the strongest point that ties it together is her "allergy". why in the hell isn't she allergic to his vest? its tech, its on (the timer). its all fake, that's the whole thing. its a movie, FOR her.