It apparently works on voice commands and...I don't pretend to know or care how. It could just as easily be a Genie's Lamp or a magic ring, really. Rules and consistency- you have no place here.
For example, he tries to salvage the moment when 13 year-old Cody first 'became a woman.' As such, he takes some Tampons and just shows up at her Private Girls' School in the middle of Gym. You. are. a. moron.
Oh and put one more point on the idiot board for showing up at a later attempt with the guy's blood still on your shirt!
He does save her, but he does so by stopping them from meeting. This makes him forget that they met (somehow), but allows Jim the Watcher to still remember her (somehow). The End.