Later, a third victim paid another £3,500 into the account, and even though she was on bail for money laundering Foster paid the money to Ghana.
Mr Cresswell added: "If someone online that you have never met in person asks you for money it is highly likely that it is a scam.
The pensioner allowed other women, who she said she believed were Hamilton's friends also trying to help him, to pay money into her bank account, which she then passed on to the scammers in Ghana.
Conmen told two of the victims that Foster was their internet boyfriend's mother in order to get them to hand over money.
One sent £8,000 to Foster's bank account, while the other sent £19,000, before they realised that they were being fleeced and contacted fraud reporting service Action Fraud.
Sherroll Foster, from Uxbridge, west London, was spared jail after admitting the offence at Isleworth Crown Court on Monday, but was ordered to repay £3,500 to another victim.
She has already lost £65,000 and been plunged into debt after taking out an overdraft, personal loans and payday loans, and using credit cards to send money to a man in Ghana that she thought was her "soulmate".
In fact, the ruse was a scam by a gang targeting women over the age of 60 who use dating websites.
Detective Constable Mark Cresswell said: "This may not be a unique tale, but it most certainly should be treated as a cautionary one.
"These fraudsters target vulnerable people and exploit them not only financially, but emotionally, making their victims believe that true happiness is almost within reach and just a bank transfer away.
"Sherroll Foster was looking forward to a comfortable retirement prior to becoming involved with this scam.