This school she taught with success for three years. At the end of that time learning that the health of her father, then eighty-three years of age, was rapidly declining, and that he was unwilling to die without seeing her, she disposed of the property and "good-will" of her school, and as soon as possible bade adieu to Costa Rica. She reached home on the 1st of June, 1857, after an absence of nearly four years. Her father, however, survived for several months.
Her health which had greatly improved during her stay in the salubrious climate of San Josè, where the temperature ranges at about 70° Fahrenheit the entire year, again yielded before the frosty rigors of a winter in the Pine Tree State, and for a long time she was forced to lead a very secluded life. She devoted herself to reading, to the study of the French and German languages, and to teaching the Spanish, of which she had become mistress during her residence in Costa Rica.
In the spring of 1861, she went to East Cambridge, where she obtained the situation of translator for the New England Glass Company, translating commercial letters from English to Spanish, or from Spanish to English as occasion required.
This she would undoubtedly have found a pleasant and profitable occupation, but the boom of the first gun fired at Sumter upon the old flag stirred to a strange restlessness the spirit of the granddaughter of one who starved to death on board the British Prison Ship Jersey, during the revolution. She felt the earnest desire, but saw not the way to personal action, until the first disastrous battle of Bull Run prompted her to immediate effort.
She wrote to Dr. G. S. Palmer, Surgeon of the Fifth Regiment Maine Volunteers, an old and valued friend, to offer her services in caring for the sick and wounded. His reply was quaint and characteristic. "There is no law at this end of the route, to prevent your coming; but the law of humanity requires your immediate presence."
As soon as possible she started for the seat of war, and on the 1st of September, 1861, commenced her services as nurse in the hospital of the Fifth Maine Regiment.
The regiment had been enlisted to a great extent from the vicinity of Gardiner, Maine, where, as we have said, she had taught for several years, and among the soldiers both sick and well were a number of her old pupils.
The morning after her arrival, Dr. Palmer called at her tent, and invited her to accompany him through the hospital tents. There were four of these, filled with fever cases, the result of exposure and hardship at and after the battle of Bull Run.
In the second tent, were a number of patients delirious from the fever, whom the surgeon proposed to send to Alexandria, to the General Hospital. To one of these she spoke kindly, asking if he would like to have anything; with a wild look, and evidently impressed with the idea that he was about to be ordered on a long journey, he replied, "I would like to see my mother and sisters before I go home." Miss Bradley was much affected by his earnestness, and seeing that his recovery was improbable, begged Dr. Palmer to let her care for him for his mother and sisters' sake, until he went to his last home. He consented, and she soon installed herself as nurse of most of the fever cases, several of them her old pupils. From morning till night she was constantly employed in ministering to these poor fellows, and her skill in nursing was often of more service to them than medicine.
Colonel Oliver O. Howard, the present Major-General and Commissioner of the Freedmen's Bureau, had been up to the end of September, 1861, in command of the Fifth Maine Regiment, but at that time was promoted to the command of a brigade; and Dr. Palmer was advanced to the post of brigade surgeon, while Dr. Brickett succeeded to the surgeoncy of the Fifth Regiment.