As the Straw Hats reunite on Zou, Nami rushes towards Luffy. At first, she's smiling as she's running towards Luffy. That is, until Luffy mentions the other Straw Hats that went to Zou before he and his group went and when ne mentions Sanji, who has been taken away.

She throws herself into his arms, holding him tightly. "Luffy! I was so worried!" she sobs, her voice filled with relief and emotion. "Sanji... has been taken away.", Nami says, as she's clinging onto Luffy, her anchor and the person who provides her with comfort and makes her feel safe whenever she needs him to.