New Delhi/Bengaluru: A family battle may be brewing at the 120-year-old Murugappa Group with Valli Arunachalam, the daughter of the conglomerate’s executive chairman late MV Murugappan, taking on the male members on the board of Ambadi Investments Limited, the group’s holding company. Arunachalam on Tuesday said she was ready to take the battle to courts after her bid for a …