In the kwiz, I got:
¿Vive aquí ________ Julia Pérez? Tengo un paquete para ella.
as I saw both first name and last name, according to the lesson, I used 'la doña'. I quote:
We use "don" and "doña" in a very similar way to the titles señor/señora. In English these are also the equivalent of Mr. or Mrs. but with the difference that we use them followed by the person's first name or followed by both first name and surname, but never just their surname.
The example even shows: Hemos otorgado el premio a don Javier Cuevas.
Yet, the answer tells me it should have been 'la señora', while in the lesson, no example is to be found stating the combination of 'la señora' (or el señor for that matter) followed by both first and last names.
Is the kwiz wrong here, or am I still missing a clue?