In 1870, Miller visited Cape Coast and was offered a teaching post of £73 per annum. In contrast, her annual salary with the Basel mission was only £16 in 1874. The Cape Coast offer was on par with a Wesleyan mission and a government-employed teacher's salary of £25 and £24 respectively in 1875 while a government headmistress in the same city made £72. In 1873, the Mohr couple permanently returned to Europe. They interceded on Miller's behalf at the Basel headquarters for the Home Committee to reduce her workload at the same salary. The home board rejected that idea saying a lighter teaching schedule would go with lower pay. Disappointed, Miller left the Basel Mission at the end of the 1873/4 year to work as an employee of the colonial government at the then newly opened Government Girls’ School at Accra, where one of her colleagues was Caroline Svanikier (née Clerk), daughter of one of the West Indians, Alexander Worthy Clerk.
