Ronal and Tonowari’s daughter in the cast of Avatar: Fire and Ash is Tsireya.
Tsireya is a young member of the Metkayina reef clan on Pandora. She is played by Bailey Bass and was introduced in Avatar: The Way of Water, where she becomes an important guide and friend to Jake Sully’s family after they seek refuge with the Metkayina.
Her parents are Ronal, the clan’s spiritual leader, and Tonowari, its chief. Tsireya’s brother is Aonung, another prominent Metkayina youth. This family connection is the key distinction in the question: Kiri, Tuktirey (“Tuk”), and Lo’ak belong to Jake and Neytiri’s family, while Pril is Ronal’s baby in Fire and Ash. Tsireya is also sometimes called “Reya” in franchise material.