Sort of a sorceress, but a benevolent one, she reads the good books and makes predictions to who wants to know about his/her future.
Unmarried girls are the preferred ones, but as we can tell from the image also old ladies and men.
"Son qua chi vol la strolega mi crio;
Per veder de becar qualche traireto,
Massime ale putazze da mario."
"Who wants the fortune teller,
here I am, I scream;
To try to make some small change,
Especially from the marriageable girls."
This Astrologer setup is the perfect one here: