Her talent was quickly recognized since at the age of 14 she won the prize of the Deux-Sèvres department and the city of Niort, which opened the doors to Paris for her, since she became a resident of the city for three years.
During this period, she attended classes at the Academy of Drawing. She frequents the studio of Puvis de Chavannes, the salon of Antonin Proust, and befriends Henri Martin. However, she neglected the Parisian salons to which she preferred the Toulouse Artistic Union. The pictorial production of Miriam Rocher can be divided into two ways.
Her first period extends from her beginnings to the years 1903-1904, during which she notably made numerous portraits with a frank and delicate touch; then from 1904, his touch became more frank and vigorous, and his work more spontaneous. Miriam Rocher gives pride of place to color.