The Spanish term traditionally used for a female quinceañera attendant is dama.
Damas form the female side of the court of honor. They may participate in the formal entrance, choreographed dances, photographs, and other ceremonial moments. A family may choose several damas, or it may create a smaller court that includes only a few close companions.
The word dama means “lady” and is also used in other Spanish-speaking contexts, so its meaning depends on the setting. At a quinceañera, it identifies an attendant rather than the birthday celebrant. The honoree herself remains the quinceañera.
Damas are often paired with chambelanes, the traditionally male attendants. Modern celebrations can adapt these labels and may use mixed-gender groups, different clothing arrangements, or no formal court at all.