She was the daughter of Breton-language writer Eugene Coroller (1857–1923), friend of Theodore Hersart of Villemarqué.
[1] In 1929, she published the Mystery of Brittany, which was dramatised in the Abbe Perrot's Breton language translation at a Bleun-Brug festival in Douarnenez in front of nearly 10,000 people.
During World War II she was associated with the pro-Nazi faction of Célestin Lainé, whose Breton militia she supported.
As a member of Lainé's faction she was kidnapped by a Maquis group in 1944 and was stabbed and beaten to death.
Plaid Cymru the Welsh nationalist party in Britain, protested that French anti-Bretonism lay behind the killing rather than anti-Nazism.