Kesi was second born to the King and Queen of Atun; a kingdom across the Narrow Sea. Her name means 'Born to a troubled father' in her native tongue, for her mother had died giving birth to her. The outcome of this was the distancing of her father from his daughter, which later leads to a close friendship with Tyrion.
Some years later after her father had remarried and produced more children, Kesi was sent to King's Landing as a Lady of the Court to Her Grace, Queen Cersei. More as a guest than anything else, an odd friendship was made between the two women. That is until certain things come to light...