Because after killing 'em off she doesn't have to work. She only has now to follow John, recce Zoe & Mark, consider how to "reach out and touch" John again, and again, and again. And that last -- having just the room to oversee. I mean, it's fantasy alright. In between this fantastical set of movements and actions by Alice, there's a kidnapping and murder mystery for the DCIs to solve. Idris is so good an actor, can hardly believe he'd sign to this sort of drivel.