Career
In 2004 Thangeswary was selected by the Tamil Tigers as a Tamil National Alliance (TNA) parliamentary candidate. Thangeswary represented the Batticaloa multi-member electoral district for the TNA in the Sri Lankan Parliament between April 2004 and February 2010. In 2010, after the Tamil Tigers" defeat in the civil war, the TNA deselected most of its Tamil Tiger appointed MPs, including Thangeswary.
She failed to get elected, coming eight and last amongst the UPFA candidates.