According to Donnie Portobello, her past-life therapist, she had been one of Cleopatra's courtesans, a Medieval midwife, and the mistress of a captain who fought at Waterloo, for example.
She knew Donnie was just making up shit, but he was so bad at it, she felt sorry for him and continued taking the sessions until he quit the practice to find a job in retail.
She wasn't opposed to the concept of past lives. She just wished she'd learned something, anything, from each of those lives that might help her live this one, which seemed to be the only one she knew for sure she'd live, ever.
She wondered whether her life were going to be the past of life of someone in the future. If so, she reckoned she wouldn't mind writing out things she'd been learning about this life or leaving the person a keepsake, such as one of her grandmother's pieces of ornate jewelry--the garnet ring, for instance.