Auxiliarily -

"No," she said. "You're the memory. The main system forgets. You remember which rocks the seals prefer. You know when the gulls are about to swarm. You're not the main light anymore—but you're the reason the main light knows where to shine."

But Elias knew the truth: it was just the auxiliary doing what the main forgot it needed. auxiliarily

To act auxiliarily is to ask: “How can I make this easier for the primary mover?” It is a shift from ego to ecosystem. "No," she said