Joyti De-Laurey, a former personal assistant at investment bank Goldman Sachs who stole more than 4 million pounds ($7.2 million) from her banker bosses, was sentenced to seven years in jail by a British court on Monday.
Pronouncing sentence, Judge Christopher Elwen said: "It is clear to me that lying is woven into the fabric of your being", and referred to De-Laurey as "duplicitous, deceitful and thoroughly dishonest".
"You perpetrated, from base and covetous motives, a planned and calculated breach of trust," he said.
De-Laurey, 35, had been found guilty in April on 20 counts of using false checks or obtaining money transfers by deception.
She stared blankly ahead as she was sentenced to seven years for one of these and five years for all the others, the sentences to run concurrently.
Her husband Anthony, 50, a former Ministry of Defence police officer who was found guilty of charges relating to the retention of proceeds of the fraud, was sentenced to 18 months.
De-Laurey's mother, Devi Schahhou, 67, who was found guilty of the same charges relating to the retention of stolen money, was sentenced to six months, suspended for two years.
As she left for jail De-Laurey reached over to kiss her mother's head.
Earlier during pre-sentencing proceedings, De-Laurey's lawyer Jeremy Dein told the court that she had received death threats and was on suicide watch in jail.
Lawyers for De-Laurey and Schahhou also told the court on Monday that De-Laurey took 16,000 pounds without permission from the building society account of her mother, to pay for household bills during her trial earlier this year.