Not quite

"I, Margo B. Miller, have lived an honest life, but it has gotten me nowhere. Had I done somethings differently maybe my life would be better, stranger, and more wonderful."
Margo has decided that this is it. The time to lay down and die. But when she dies, for some reason she doesn't quite die. She is given a wonderful opportunity to relive bits of her life and change somethings she has always wanted to change and maybe live to see the result. But there is a catch, a person she knows has the same desire to die that she did and Margo has to prevent their death before it's too late.