She is killed by the BO while attempting to protect her friends. She'll be remembered as a hero.
She continues to live with Agasa as his adoptive daughter and her real identity will be hidden forever.
She becomes Shiho and turns herself in because she was a criminal.
She becomes Shiho and reveals everything about her past to her friends. She'll live happily ever after.
She travels far away to live with a fake identity and ends all contact with Conan.