Ratna has blamed Baisakhi (who also left her husband Manojit Mondal within 2 months of their marriage to live with Sovan) for instigating trouble in their married life.

Sovan was reportedly displeased when Dulal Chandra Das was fielded as TMC's candidate for bypolls to the Maheshtala seat in 2018, which he interpreted as party supremo Mamata Banerjee siding with his estranged wife Ratna.

In November 2018, Mamata Banerjee also made Sovan resign from his positions as a Minister in her cabinet & mayor of Kolkata Municipal Corporation due to marital problems affecting his work,[13] which caused him to further distance himself from the party.

In August 2019, Sovan, accompanied by Baisakhi, joined BJP, while Ratna continued to remain in TMC.

[14] In the 2021 state elections, TMC fielded Ratna Chatterjee as its candidate from Sovan's erstwhile seat of East Behala.

[15] After Sovan was arrested over the Narada sting operation, Baisakhi was recorded by the media crying before the security guards of Alipore Jail to allow her to meet him, but they refused, saying that she wasn't legally related to him.

Sovan has also made Baisakhi his legal successor for his all properties, displacing Ratna & his son Saptarshi.

[17] Chatterjee supports the restoration work of building the Bhangar Power Grid, which was stopped due to the protests of villagers over the acquisition of land.

Left Front councillors boycotted a monthly meeting of the Kolkata Municipal Corporation to protest against the body's inability to solve the issue.