Two weeks later, the boatmen were detained and confessed; Flora and Kingsburgh were arrested and taken to the Tower of London. After Lady Margaret interceded on her behalf with the chief Scottish legal officer, Duncan Forbes of Culloden, she was allowed to live outside the Tower under the supervision of a "King's Messenger" and released after the June 1747 Act of Indemnity. Aristocratic sympathisers collected over £1,500 for her, one of the contributors being Frederick, Prince of Wales, heir to the throne; Flora allegedly told him she helped Charles out of charity and would have done the same for him.