Everything you need to understand or teach Her by Christa Parravani.
When Christa Parravani lost her identical twin sister, Cara, to a drug overdose when they were 28 years old, Christa felt she had lost part of herself. She suffered from a profound identity crisis at times thinking that Cara’s spirit had invaded and taken over her body. Christa had always deferred to her sister Cara who was recognized as the dominant twin and stronger. But through her grief and guilt, Christa learned that she was the strong twin and that although she’d always miss her sister, she had a full life of her own to live.