Franks, represented by James McCrindell, denied the charge of soliciting murder between August 17 and September 1, 2020, but admitted to the jury that she had sent the messages in August 2020.
The jilted lover, of Milton Keynes, Bucks., insisted in court however that she never intended for anyone to get hurt.
She told the jury she was convinced the website in question - which she had uncovered through watching true crime documentaries and developing an interest while furloughed in lockdown - was a scam and wanted to prove to herself was a scam out of her own curiosity.
Following the jury's verdict, Judge Dugdale adjourned the case for sentencing on September 9.
He told Franks: 'You have been unanimously convicted of soliciting murder, it is a very serious offence.
'It is an offence for which I will have to pass a fairly lengthy sentence. I will need to find out more about you, which will take time. There is no option other than to take away your bail.'
He remanded Franks, who was now a manager at a branch of Iceland, in custody until sentencing.
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