Who is Mma Precious Ramotswe from Tears of the Giraffe and what is their importance?

Mma Precious Ramotswe is the founder of the No. 1 Ladies' Detective Agency. She had been married to Note Mokoti and lives in a house on Zebra Drive. Mma Ramotswe had been raised by her father, Obed Ramotswe, and cousin since her mother died when she was a baby. She had had a child by her first husband but the baby died soon after it was born. Since she knows what it is like to lose a child.