Madrina is the Spanish term for a female quinceañera sponsor.
A madrina may be a godmother, relative, or trusted family friend who contributes money, an item, or practical help to the celebration. In traditional arrangements, several madrinas and padrinos can share responsibility for different parts of the event.
The word is related to madre, meaning “mother,” and its ordinary Spanish meaning is godmother. In a quinceañera, however, it identifies a sponsorship role rather than the girl being honored or a member of the dance court.
Dama means a female attendant, so it is a plausible but different term. Comadre describes a relationship between a child’s parents and godparents or a close female friend, while novia means fiancée or girlfriend. Those terms do not specifically name the female sponsor of a quinceañera.