Just thought I'd give my two cents as someone who has worked with the airline business on the LE side:

There is no point in EDCing anything that you would think is worth while in a normal environment (I.E. KNIFE, FIRESTARTING DEVICE).

To me it seems you are looking for things that she can use when off the airplane. In that case it would also matter if she flies international flights.

Maps and phone numbers for local services are most important. There is no sense carrying tons of gear for CONUS when your stuck in Bali.

If your wife is not quite into preparedness and you can't get her to agree with your list, there are two things I would take off right away:

Compass
Surefire E1 or E2

The compass is only useful if you know how to use it, and in most cases only useful if you have a map.

The Surefire is only useful if you train with it as a self defense tool.

I would recommend the following items in addition to what you have listed, as well as other posts:

(2)prepaid credit cards with $50.00 each
(1) $50.00 US currency
(2) $20.00 US currency
(2) $10.00 US currency
(5) $5.00 US currency
(10) $1.00 US currency
(2) prepaid calling cards with at least one having international capability
(2) sets of all identification and medical needs/insurance other than originals: (1) photocopy, (1) flash drive
Phone numbers for at least (2) travel agencies CONUS and (3) OCONUS
If traveling OCONUS, phone numbers/addresses for all Consulates and/or Embassies both US and allied.

The money can be split up between luggage and on the person, but the first two listed denominations will be able to pay for at least one night in a safe hotel OCONUS. The rest can be used for food and other needs. Any country will take US dollars. Although you may get screwed dealing in Europe (Euros are generally better accepted) it's worth the hassle.

Hope this helps....