This is the 8797th most frequent Spanish word.
susana
"Susana" is a Spanish given name, equivalent to "Susannah" or "Susan" in English.
Proper noun; 'Susana' is used as a subject to identify the person performing the action.
Susana está leyendo un libro interesante.
Susana is reading an interesting book.
'Susana' here functions to specify the person who has the preference for coffee, contextualized by the indirect object pronoun 'a'.
A Susana le gusta el café por la mañana.
Susana likes coffee in the morning.
'Susana' is the proper noun indicating the companion in the activity.