Well, I called to cancel my flights, per nomiiiii's suggestion. I actually had two reservations, each using a companion code. For the one in my name, the ticket price + companion fare went into my wallet, as I wanted. The companion code is supposed to be re-issued with an expiration date of Feb 2021 (was originally Dec 2020); so far the code is not showing up as valid on my account.

For the reservation in my wife's name, they were only able to put the ticket price in her wallet, and AS accounting is supposed to issue a voucher for the companion fare, which I can then transfer into anybody's wallet (I think). The companion code is supposed to be re-issued, but the agent didn't know what expiration date that would have. So far no code in her account.

The agent did not know why my wife's ticket cancellation was different than mine.