Question: What was the nickname of the Brazilian heiress that signed the Lei Aurea?
Related documents: [0]  [DOC] Dona Isabel (English: Isabella; 29 July 1846 – 14 November 1921), nicknamed "the Redemptress", was the heiress presumptive to the throne of the Empire of Brazil, bearing the title of Princess Imperial. She also served as the Empire's regent on three occasions. [END] 
[1]  [DOC] The Lei Áurea (] ; English: Golden Law ), adopted on May 13, 1888, was the law that abolished slavery in Brazil. It was signed by Isabel, Princess Imperial of Brazil (1846–1921), an opponent of slavery, who acted as regent to Emperor Dom Pedro II, who was in Europe. [END] 
Answer: 
"the Redemptress"
"the Redemptress"