Unfortunately, only "you" can use the $50 Companion Fare. Hence why they put the names on them now.

My wife and I are both AS Visa holders, and both get the coupons. I used mine first, and then tried to use hers at the Bellevue office, and they said I couldn't use it, even though she was one of the tickets!

She later went and purchased the tickets for us.

Wish I had better news.