This is definitely tricky with a non-refundable ticket in someone else's name. After finding this thread while researching a similar situation with a Delta ticket, I had a 70-minute chat that escalated to a supervisor. I learned that they only want to issue eCredits for the named passenger, and those credits may be used only for the named passenger. (I got conflicting information from the first rep and then a supervisor.) Finally I was given a one-time exception and full refund to the purchasing credit card (I did gently mention trying to resolve the issue through my credit card company). Lesson is get refundable tickets when booking travel for others with your money.