Well, update re Hester Wright!!
I was contacted by a person on Ancestry yesterday and to cut a long story short, her father who is in his 80s and a retired GP is the grandson of one of Richard Wright's sisters Annie Wright, He remembers that Hester was admitted to the Asylum because she was 'backword' - Wondering if she was possibly Downs Syndrome. He also remembers Richard (the murderer) after he was released from prison and says he was a very quiet and withdrawn man. So, mystery re Hester is solved.