Maybe someone will remember this quirky book from the late 70s. It was about a teenaged girl who was having trouble fitting in with friends and at school, but who had a special relationship with her Italian grandfather at home who spoke no English. They lived in a tall apartment building in a big city and the girl had a lot of freedom and was fairly independent. After the grandfather loses one of his teeth, the girl, oddly, takes the tooth and puts it on a chain and wears it around her neck. Another time, the girl is upset about something and grabs a blanket and sleeps in the bathtub. Something bad maybe happens to her at school on Halloween. The title of the book may be the girl’s name, but not sure about this. The book was memorable to me because of it being somewhat different from most teen books of the time.
Lost Classics of Teen Lit: Name That Book! 