Short answers, pulled from the story.
Daulat Rao Sindhia became Maharaja of Gwalior on the 3rd of March 1794 following his formal installation by the Satara Chhatrapati and Peshwa. He was fifteen years old when he took power after losing his uncle Mahadji Scindia to death without a direct heir.
Benoît de Boigne served as commander until his retirement in 1796, after which Pierre Cuillier-Perron succeeded him with different views. These French officers implemented new techniques that influenced how battles were fought across central India regions for decades.
The Treaty of Surji-Anjangaon signed on the 30th of December 1803 deprived Daulat Rao of fortresses named Gwalior and Gohad while forcing him to give up possessions between Yamuna and Ganges rivers. A fresh treaty in 1818 effected readjustment of boundaries where Ajmer and other lands were ceded during this later agreement.
Daulat Rao Sindhia maintained independence until 1832 when final treaties reshaped regional power dynamics. His kingdom continued collecting Chauth taxes from neighboring states including Mughals until 1886 despite most Indian rulers accepting British rule by early 1800s timeframe.