What did Ellen do to help betty mahmoody?

There seems to be a misunderstanding in your question. There is no known information or evidence that suggests a person named Ellen was involved in helping Betty Mahmoody.

Betty Mahmoody was an American author who wrote the book "Not Without My Daughter," detailing her harrowing experience of being kidnapped by her Iranian husband and taken to Iran against her will.

If you have any more information about the individual named "Ellen," please provide it, and I can try to help you find information about their potential involvement in Betty Mahmoody's story.