Please help me... my case is a little different.

I so need help and I am asking for someone to please understand that my circumstances are a little unusual but, are true,
I am trying to find the password to a woman who I have beem looking for for almost 20 yrs. I have been told , she is my sister. My father had an affair with her mohter 40 yrs ago and she does not want to find out if we are sisters. Well, I do! I do not wish to invade on her but, if I had her emails, I would know the answer for sure becuase she has kept in contact with a cousin of mine. Please, please, help me!!!

You don't wish to invade on her? But you want to read her emails without permission? That is a bigger invasion.
Contact her, tell your story, and find out the truth.