In May 2020, she was one of the 17 initial members of the short-lived Ecology Democracy Solidarity group in the National Assembly.

[3] In February 2020, Tuffnell left LREM, expressing frustration over the way the government was forcing through its radical reform of the pension system and failing to address environmental issues.

[4] In May 2020, she was one of the 17 initial members of the new Ecology Democracy Solidarity group in the National Assembly.

By mid-2021, Tuffnell announced that she would not stand in the 2022 elections but instead resign from active politics by the end of the parliamentary term.

[5] In April 2018, Tuffnell joined other co-signatories around Sébastien Nadot in officially filing a request for a commission of inquiry into the legality of French weapons sales to the Saudi-led coalition fighting in Yemen, days before an official visit of Saudi Crown Prince Mohammed bin Salman to Paris.