Letele resigned her directorship in July 2011, and the company was placed into liquidation on Jan. 31, 2012.
The Serious Fraud Office, who brought the charges against Letele, established she had conspired with Ramni Kumar to obtain mortgage finance for low income families using false documents.
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The finance was then used to purchase properties from interests related to Letele and Kumar, who profited from the transaction.
The SFO said the case was one where inexperience had been exploited.
"Vulnerable investors are often targeted by those who are aware of their inexperience in dealing with significant financial transactions," SFO director Julie Read said.
"It is important wherever possible to obtain advice from reputable advisers and institutions."