Cassie was born Sue-Ellen Brock to performers who traveled all over Europe. She describes the time with her parents as "magical", but they died in a car crash outside Zürich when she was still a child. Following their death, Cassie was sent into the US foster system and ended up with a foster family that was so strict they "killed the magic", so she ran away and found her own way of life. She attended college and backpacked around the world, gaining new experiences and shaping her personality. When she found out that she had property in Middleton, she took it as a sign to go there and settle down.
Mother of Grace Russell. Step-mother of Brandon and Lori Russell.
