Blacktail Deer Plateau It's Britney, bitch.

Her jaw dropped. She thought Wraen had said she didn't know Ibis very well! Yet here she was, telling stories of her mother's childhood. A wee puppy, and singing before she talked— 

She still sings! Lilitu exclaimed. She has since we were really little. Do you. . .

A thought had occurred to her, and it filled her with such wonder that she could barely sit still. Eyes round, she looked at the woman in earnest. Are you. . .her mama? Because if she was, Wraen was family, and that was exciting. She hadn't known any other family beyond her parents, her sister, and Uncle Vin.

How else could she know? She must have been there at the very beginning.