Later she took singing lessons, and at the age of fifteen, she was admitted to Draw School for Women where she studied to be a figurative artist.
However, she was more interested in music, and in 1886 she wrote her first opera Don Juan de Marana (eventually performed in 1931).
In 1902 she married theologian and author Hans Frederik Wandall and continued to support the family through teaching music.
Prominent students included opera composer Peter Cornelius and pianist Ellen Gilberg.
Her successful student Alice Shaw became her patron and funded the publication of four books of her compositions in 1928.