CLEAN : Fans pay tribute to Olivia Newton-John in Hollywood

The transcript discusses a memorable movie experience with the speaker's grandma, who is admired for her qualities. It highlights a transformation story of a shy girl becoming confident, likened to a fairy tale. The speaker appreciates the openness of famous people about their struggles, which serves as an inspiration.

What does the speaker mean by saying the person's story is like a fairy tale?

Why does the speaker appreciate the openness of the person they admire?