One thing that is not covered in other answers is dinner time. Aim to get done with dinner by 7/7:30. In India, generally, dinner is very late - 9/9:30. Get done with the whole "getting ready for bed" (brushing teeth, toilet, change into PJs/bath) by 8:00pm, and after that, its quiet time. She can stay in bed, and can read by herself. Lights off by 8:30. (Ballpark times, aim to get ready for bed an hour before bed time.)
I understand that the bedroom is shared. If the other adults cannot get to bed by that time, at least make sure that the bedroom is not used by others till the child is fast asleep. Keep the door closed, and the rest of the house relatively quiet (no TV, no excitement). I used to stay with my child in the bedroom till he fell asleep till he was 4 or so. I used to listen to something in my headphones, or work on my computer with very low display light. I would leave the room if my child got off the bed, so he stayed in bed.
Waking up the child earlier, along with a quiet time in the night will help the child to sleep.
Change will not happen in a few days. You will have to enforce the new routine for a few weeks before it becomes a habit. Make sure other family members are on board for the new plan - it is for better habits for the child, better functioning of the family.