Valya's rise was not solely due to her intellect. She possessed a rare and potent ability: . When her training reached a critical juncture, she was unable to take the vow to put the Sisterhood above all else. However, Mother Superior Raquella saw Valya use the power of The Voice and took her personally under her wing. Raquella then revealed the secret genetic library she had compiled, a project designed to make the best matches among the Great Houses—the nascent eugenics program that would become the cornerstone of the Bene Gesserit.
" TV series, specifically focusing on .