The Double by South is out of the box and halfway to the table -- on this planet it sure looks like a call was made. However, South stops in mid action, continuing to hold the red card in her hand, and calls the TD.
She then explains to the table and to the TD that she did not see partner's 1♥ opening bid. Let's assume Opener is smart enough to know South has a takeout Double of 1S, rather than a negative double of a 1S overcall.
What should the TD do, and under what law?
The TD actually proceeded under laws pertaining to change of call; however, only one call was made by Responder followed by a lot of UI to opener.