With the support by 25 rebel AIADMK leaders to the C Joseph Vijay-led coalition government in Tamil Nadu during the floor test Wednesday, the split in the party is formal. However, the worry among some quarters in the ruling TVK is that while on the face of it its government is more secure, the AIADMK faction backing it may owe its loyalty to Delhi, leaving the Vijay ministry vulnerable to pressures. With first-time AIADMK MLA Leema Rose Martin seemingly swinging the MLAs away from Edappadi K Palaniswamy’s leadership, there is also apprehension that the door has been opened for lottery baron Santiago Martin to stretch his influence across the administration. Leema is Santiago’s wife, while their son-in-law Aadhav Arjun is a close Vijay comrade and a minister in the TVK government. According to sources, Leema too may get a place in the Cabinet.…