Simplify the following text for a Grade 9 native English-speaking person.
Original: Prior to that , in 2005 , she also was the first woman to become Chief of Staff of Brazil , appointed by then President Luiz InÃ cio Lula da Silva .
Simplified: In 2003 , in the government of Luiz InÃ cio Lula da Silva , she was the minister of Mines and Energy . She became Lula 's Chief of Staff in 2005 , after her predecessor , JosÃ Dirceu , resigned because of charges of corruption .