Who took over writing the final chapter of the Sai Satcharitra, and how did they feel about it?

Chapter 53 describes how a new, unnamed author took on the task of completing the book after Hemadpant's death. This author expressed profound humility and feelings of inadequacy for the role. He describes himself as a "fool with a dull intellect, having no scent of knowledge" and laments, "How could I compose a poetic work? I am blind to poetry from the start." Instead of relying on his own skill, he fervently prayed to Lord Dattaguru and Sai-Narayana for mercy and inspiration. He believed that any ability to write would come only through the Guru's grace, ultimately concluding that Sai himself would be the true author, using the writer's mouth merely as an instrument.