It stinks to think of the worst, but what if she becomes separated from you?
I would add some mace for protection. Also some maps and directions for how to get back to your place. Perhaps a map with locations of and directions to certain safe areas (homes of friends or relatives, rendezvous points). A general map showing locations of water sources on the way to any of these locations as well as back roads/back ways to get back. Laminate in case of moisture or rain.
Also instructions on various things--how to start a fire, etc. Info on what to do in various scenarios--if she gets separated from you, if she gets lost, if you die or are incapacitated, numbers and addresses of relatives, police stations, hospitals, MAG members, pix of yourself that she might post on a board looking for you. You can pack a lot of info on a few sheets of paper.
Also sunscreen, a hat, fresh socks and some moleskin for blisters if she's hoofing it home.