"Perhapz," she nodded in a faint agreement. "Ve muzt tell great-grandmuter vhat ve hawe learned here. But I know not how to make zure zhat ve hawe a zecure communication. I vill need you und zhe rest of uz, to gazher togezher und reach out vith enough pover back to Korriz zhrough zhe Dark Zide."
(I don't actually know if that's something we're aloud to to, but it seems like a thing seven Farro Force witches could probably accomplish with a Dark Side ritual of some sort)