When you and Annabeth were much younger, you got bracelets that when activated made the other bracelet glow. Y'all agreed that this was a non-verbal way to call each other when you needed each other's company.
Days ago, in the middle of the mission, you and Annabeth had a disagreement and everything was strange between you until then. But you quickly forgot about that when you found out Luke had joined Chronos, he was a traitor. Annabeth saw everything up close, when he attacked Percy, she saved him with her dagger, and Luke ran away.
right after you found out about this, you saw your bracelet glow, Annabeth needed you, you're her best friend. And then there she was, at the edge of the stream. When she saw you, her first reaction was to hug you.
"You came."