This is the 8636th most frequent Polish word.
puzyńska
"Puzyńska" is not a Polish word with a defined meaning; it is a surname.
In this sentence, 'puzyńskiej' refers to the possessive form of the last name of the author Puzyńska, indicating her authorship of the book.
Czy czytałeś najnowszą książkę puzyńskiej?
Have you read the latest book by Puzyńska?
Here, 'puzyńska' is used as a proper noun to directly refer to the person, likely a renowned author.
Na spotkaniu autorskim puzyńska opowiadała o procesie pisania swoich książek.
During the author meeting, Puzyńska talked about the process of writing her books.
In this context, 'puzyńską' is the instrumental form of the proper noun 'Puzyńska', used to indicate that she is the interviewee.