Who is Morrigan from Taltos: Lives of the Mayfair Witches and what is their importance?

Morrigan, Mona's babyis a Taltos. Her father is Michael. She is described as curious and ready to learn from infancy, and just as demanding a toddler as any other. As a Taltos, Morrigan grows to her full size within hours of her birth. She also craves the attention of another Taltos from the start. When Ash arrives at her home, she crashes through a window to greet him.