My daughter will be staying off-site next month. Can she link one of my old Magic Bands to her ticket?
Your bands, even if deactivated, are still linked to your MDE account. Originally they could not be moved, however things change. Perhaps a liner, at the world now, could ask at guest relations.
Call WDW IT on (407) 939-7765 - they should be able to reassign the MB to your daughter. You then just need to link the ticket in MDE.