>>21135604(Mods, these are all locations I made up)
Let's say she mentioned going to see Godzilla at the AMC 69 with a picture of the ticket in her hand and has a few shots of the view of a favorite restaurant she frequents.
You find out she bought a pizza, so you call around and ask "Hey that pizza with (toppings mentioned,) I wanted to call and see if I can make that a large and verify the delivery address I gave you" (also if you believe Zen is a dude then calling won't set off any alarms) and depending on the competency of the person taking the call, and if it is the same person, you've got the info you need.
But you would have to be a real schizo to be keeping all that info on hand.