"Finally, the law is taking its own course and action is being taken according to law. After a long time, people's faith in the judicial system has been restored," she told reporters here.
On Kanimozhi's plea in the court for grant of bail as she was a woman, Jayalalithaa said,"It is a wrong argument."
"It is a wrong argument.. In politics you cannot expect any concession to be shown because are a woman. Similarly, where criminal activities are concerned, one cannot expect any leniency to be shown because one is a woman," she added.
Jayalalithaa was responding to questions over Kanimozhi's arrest in connection with the transfer of Rs 200 crore from 2G spectrum co-accused Shahid Balwa's DB Realty to Kalaignar TV, in which the DMK MP holds a 20 per cent stake.
Kanimozhi, arrested on May 20 in the 2G scam was denied bail by a trial court, following which she had moved the Delhi High Court.
On Karunanidhi defending his daughter, she said, "Only a court which is looking into the case where someone is included as an accused can decide (whether he/she was innocent)."
To a question on whether Congress president Sonia Gandhi had invited her to Delhi for tea, she said she had come across such reports only in the media.
"I keep reading it and seeing it in media... She spoke to me over phone and congratulated me for the AIADMK's victory (in the April 13 polls)," she said.
Asked if her last year's offer of extending support to Congress if DMK pulled out over the 2G issue still stands, she shot back "Only those who have to ask this have to ask this. Why are you asking?" .