Helena's Links
Absolutely devoted to Ai and uses her status as beloved by Ai to her advantage.
Helena is extra special to Ai for reasons only Ai knows.
Helena despises Cassandra. She wants to kill her but knows she can't, as doing so could ruin Helenus.
Cassandra's afraid of Helena, and desperately is trying to muster the courage to tell Helenus the truth about Helena's personality.
Helena absolutely adores Helenus and wants them all to herself. She's casted spells on Helenus that have removed a degree of their free will when it comes to Helena. Helena is incredibly abusive to Helenus emotionally and sexually, but it's done by spells involving mind control. This way, Helenus doesn't realize what's actually happening with their relationship.
Helenus thinks Helena is a clingy but well meaning girlfriend, which is absolutely not true. They're completely unaware of Helena's true nature, and this is done on purpose.