She was the sister of the ballerina Marianne Cochois and the second cousin of Marie Sallé.

She was engaged at the French Royal Court Theatre of Frederick the Great in Prussia between 1743 and 1749.

She was considered a leading artist, and was given the rare privilege by the king to reside in Charlottenburg Palace.

In 1749 she married the French writer Jean-Baptiste de Boyer, Marquis d'Argens.

She has been the subject of poems and a famous painting by Antoine Pesne.