On 29 December 2006 she joined the Government of French Polynesia of Gaston Tong Sang as Minister of Tourism and Environment, a position she held until September 2007.

Reelected in May 2013, she became chairwoman of the Committee on the Economy, Finance, Budget and Public Service.

As a representative, Sage sat with the Rassemblement pour une majorité autonome (RMA) group.

[2][3] At its foundation in February 2016, she joined the autonomous political party Tapura Huiraatira, founded by Édouard Fritch, who had since become President of French Polynesia.

[4][5] During a 15th legislature of the French Fifth Republic, she sits on the Constitutional Acts, Legislation and General Administration Committee.