Luitgard

Luitgard is a silvertongue -- one of the gifted.
Lyall is a wordsmith -- one of the gifted.
Rhiannon is a terrascaper -- one of the gifted.
Luitgard is a thief, a street rat. Lyall, the daughter of a senator who wishes to be Queen. Rhiannon, the forgotten daughter of a cruel King.
When these three are thrown together in a quest -- some willingly, some not -- they learn that, maybe, their worst enemy is not the world. Maybe they finally have someone on their side.