Everything did appear rosy towards the start of the year, but that is far from the case today. One can argue that the tipping point came when she attempted to promote Luiz Inacio Lula da Silva to a cabinet position in a last ditch effort to help him avoid prosecution (for scandals inside Petrobas).
From US Today: Rousseff has been terribly unpopular for at least a year. Opinion polls show her public approval hovering around 10%. And the last 12 months have been spectacularly brutal for her: The economy is imploding; multiple corruption investigations are ensnaring — and jailing — rich and powerful politicians and business execs; and the Zika crisis is exposing drastic problems with health care - Link