You might find them in specialized bookstores that carry a diverse range of literature. Some independent bookshops are known for stocking unique and lesser - known works.
Since I don't know much about N Seethalakshmi's novels, you could reach out to reading groups or book clubs. People in these groups are often passionate about reading and might be aware of her novels. They can also give you some insights into her writing style and the themes she explores in her works.
To find N Seethalakshmi's latest novels, you can join some book clubs or reader communities. These groups often discuss new books by various authors. You can ask in these communities if anyone has read her latest works or knows where to find them. Also, following her on social media, if she has an official account, might give you updates on her new novels.
Online bookstores such as Amazon are a great place to start. They have a large inventory and usually update their listings quickly. Just search for 'N Seethalakshmi' and then look for the novels with the most recent publication dates.
Many Tamil novelists explore the social and cultural changes in Tamil Nadu. Seethalakshmi may be no exception. Her latest novels could potentially have themes related to the modernization of Tamil society, the impact of globalization on traditional values, and the struggles of individuals within the changing social landscape. Also, themes of female empowerment and the role of women in Tamil society might be present, considering the current trends in Tamil literature.