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

Brenda is the witch who works at the occult book store. She explains to Torey that she is a white witch and does not call upon the forces of evil for her power. Brenda tells Torey that she believes the people with whom Torey is dealing are involved with black magic. Brenda believes the Sascha doll was placed under the tire of Torey's car in an attempt to get her to commit suicide.