You know how a Vee is a poly relationship where A dates B and C, but B and C don't date each other and how people headcanon that the Vees are in this type of relationship? Another theory/head canon floating around is that they own the souls of each other?
But what if we combine those two ideas and have Vox own both Val's and Velvette's souls? Obviously those contracts would be more lenient and would be more of a formality, but still.