Who is Alison from The Owl Service and what is their importance?

Alison is Margaret's daughter. She is described as intelligent, independent, and strong willed. Alison also appears to be one of the most mature, as her inquisitive mind seeks to find answers to the events that are happening to her and her compatriots through the course of the narrative. Her inquisitiveness however, is offset by her stubbornness as she continues to unwittingly invoke the spirit of Blodeuwedd without really realizing what she is doing.