"Would be useful to indicate warnings and all clears," she observed. "As we can't risk having anyone looking out for the Carrows or the unsympathetic."
She blushed at her next notion, but could not help but voice it. Her heart was a poet's.
"I do not believe we should abandon the galleon, however. It is a powerful symbol, now, after everything that has happened. Perhaps the Charm could simply be modified."