Who is Miss Ellie from Ghost Girl: The True Story of a Child in Peril and the Teacher Who Saved Her and what is their importance?

Miss Ellie one of the Dallas characters that Jadie refers to often in the stories of her abuse. Because Miss Ellie is referred to so often, it is assumed that she is the leader of the group. It is Miss Ellie whom Jadie says took Jenny the cat. Miss Ellie is also the one who slit Tashee's throat, then collected the girl's blood in a cup.