The medallion doesnt work that way

"... and the effects would last until the owner (her) willed it to be undone,..." Sorry, in ALL the stories, including the setup and other Branches here, clearly says that the Medallion don't work that way. The changes are permanent unless otherwise changed by the Medallion it's self ... and then only after waiting a full 12 hours! While adding to the Branches is a good thing, at least READ the stuff first!