Who was Emily Geiger?

At the period when General Nathaniel Greene was retreating from Ninety-Six, South Carolina during the Revolutionary War, he was anxious to send an order to General Sumter, who was encamped on the Wateree.  General Greene wanted Sumter to join him and attack the British commander, Lord Rawdon, who had divided his forces.

But no one could be found willing to run the risk of traveling a section of the country controlled by vengeful Tories. At length a young girl, Emily Geiger by name, offered her services, greatly to the surprise of the American officer, who at once accepted them. He accordingly wrote a letter, which he gave to the girl, but at the same time informed her of its contents, that she might be able to deliver the message orally in case of accident.

Emily set out on horseback, and met with no adventures until the second day, when she was intercepted by Lord Rawdon's scouts. Not being skilled in telling falsehoods, she was suspected and placed in confinement, and an old Tory matron was sent for, that she might be searched. Emily passed the time by eating the letter, and, nothing suspicious being afterward found on her, she was allowed to proceed. She succeeded in reaching her destination and discharging her mission. In consequence, Sumter soon joined the main army at Orangeburg. Emily Geiger later married a wealthy planter named Threrwits, who lived on the Congaree River in South Carolina.