Translation:Dear (female), mistress
Querida has several connotations, some of them very different from one another: it is used frequently as an introduction in personal letters written to female members of the family, i.e. ‘Querida madre’ [Dear mother], but when used as a noun, it means “mistress”.
Querida’ (or masculine Querido) can also be used in the middle of the sentence, just as any other adjective: ‘Es una muy querida amiga’ [She is a very dear friend] “Siempre fue un hijo muy querido” [He was always a very beloved son]
Example:Querida doña Olga Ruiz
Translation:Dear Mrs. Olga Ruiz