Last Queen by Chitra Banerjee Divakaruni

Daughter of the royal kennel keeper, the beautiful Jindan Kaur went on to become Maharaja Ranjit Singh”s youngest and last queen, his favourite. She became regent when her son, Dalip, barely six years old, unexpectedly inherited the throne. Sharp-eyed, stubborn, passionate, and dedicated to protecting her son”s heritage, Jindan fought hard to keep the British from annexing Punjab.