She sold her husband's house and moved to live in the Fenchurch Street area where she also had an office.
The business also changed as she specialised in banking, bill discounting and insurance where membership of Lloyds was important.
She received money on their behalf and advised them about potential businesspeople and kept them aware of markets and current events.
[2] The value of their business is evidenced by Boulton taking on the manufacture of copper coinage and when the coins were ready, they put into circulation, via their mint and her premises in London.
[2] In 1802 she died after a short illness aged 43, and she was buried on 16 January 1802 at Croydon Minster.