Reminds me of a scene from Desperate Housewives, where the kid witnesses his imaginary British nanny getting crushed by a garbage truck.

I think they meant the Irish woman that Peter travelled to future post-apocalypse New York with.

If you mean Charlie, she went to the past and lived out a happy life. Hiro meets her as an old lady in hospital.

I like this idea I had of every home having a grow space/greenhouse that is tended by an AI. Everyone can grow one or two crops with near-zero effort, then share and trade their excess produce with their local community. Food can once again be a way to connect with, and look out for our neighbours.