From The Jacket:
Every night, as Faye puts her daughters to bed, she thinks of her own mother, Jeanie, who died when Faye was eight. The pain of that loss has never left her, and that's why she wants her own girls to know how very much they are loved by her-and always will be, whatever happens.

Then one day, Faye gets her heart's desire when she's whisked back into the past and is reunited not just with her mother but with her own younger self.

Jeanie doesn't recognize grown-up Faye as her daughter, even though there is something eerily familiar about her. But the two women become close friends and share all kinds of secrets-except for the deepest secret of all, the secret of who Faye really is. Faye worries that telling the truth may prevent her from being able to return to the present day, to her dear husband and beloved daughters. Eventually she'll have to choose between those she loved in the past and those she loves in the here and now, and that knowledge presents her with an impossible choice.

If only she didn't have to make it....