At first she claimed she had laced the dish with arsenic but then confessed she had added dog excrement , the BBC reported.
Martin’s defence lawyer Terry Gallanagh compared the case to "an episode of Desperate Housewives", and said that at the time of the curry incident, the couple’s 21-year marriage "had hit an all time low".
He claimed that his client had endured "continued mental abuse" over a period of about five years.
The court heard that Mr Martin had routinely questioned his wife’s parenting skills and started a new business without telling her.
The couple are now in the process of getting divorced.