Author Carolina Nabuco & ficiton & "The Successor", & written in
French &/or written in Brazilian &/or translated in another language?
& or a unpublished manuscript & where to find it?

Hi  fargobites,

Here you go -

Bookseller in the US:
Nabuco, Carolina: 
A Sucessora (Coleccao Livros Do Brasil)
Lisbon: Edicao Livros Do Brasil. Trade Paperback. Fine/No Jacket. 8vo
- over 7¾" - 9¾" tall. 205 pp. Text in Portugese. An unread copy.
$20.00
http://www.iobabooks.com/books/3344879.html

Bookseller in France:
LA SUCESSORA
NABUCO CAROLINA
Description:  200 pages. Etat : Moyen. Bookseller Inventory # 7027100635027
Publisher: LIVROS DO BRASIL
Publication Date: 1958
$20.98
http://www.abebooks.com/servlet/BookDetailsPL?bi=745696536

Bookseller in Spain:
NABUCO, Carolina.
LA SUCESORA .
Trad. Hernán del Solar. Ed. Zig-Zag. Santiago de Chile, 1943. 21 cm.
186 pág., 3 h. Cubierta ilustrada por Mauricio Amster. Marca de
anterior poseedor. * Literatura brasileña. Novela.
$29.50
http://www.ilab.org/db/detail.php?booknr=269177523

Additional Link of Interest

"A Sucessora" (1978) [TV-Series]
http://french.imdb.com/title/tt0138265/

I'm very glad to have found this for you. If you have any questions or
if I misunderstood your question, please post a clarification request
and wait for me to respond before closing/rating my answer.

Thank you,
hummer

I searched the used book websites.