CO sells those headsets either in the price of the ticket or individually. Is a coach pax taking a headset from someone's seat in FC any different than coming up the aisle and swiping a drink or meal? Many of us have often have too much to eat or drink, does it mean that someone should take our food or drink from us without asking? The fact that any of the items in question might be of little value doesn't fully address the ethical dilemma.
Probably her own headset didn't work (it has happened to my wife) and she simply took the extra one from an empty chair.
From the little plastic bag that the headsets come in:
We hope you enjoy this electronic headset for your inflight entertainment. Please feel free to keep this headset and use it on your next Continental flight. We thank you for choosing Continental airlines.
I used to keep my house unlocked, until an unknown woman from a neighbor barracks employed by my landlord stole a pair of binoculars in 1992. In 1995, at a different house, a burglar attempted a break in while we were at church. Only a simple hook inside the door (severely bent) saved us. Three houses later, at a very remote mountain top location, we keep two dogs fenced inside our yard and always lock up.
I used to keep the car unlocked until 1998 when someone stole a pair of my wife's sunglasses and destroyed the glove box, from the church parking lot next to my office. Now I keep all doors locked while driving, too, not so much for carjacking protection (
that's never happened in the CNMI yet--though like seatbelt wearing it's a good habit to get into for driving in certain cities in the mainland) as for roll-over and passenger ejection protection purposes.