Back to the room of the family who mistook her for her own daughter, she chose not to stop this identical woman from committing suicide for the first time, and then disguised herself as her identity to live a new life and avoid being hunted down. But with a second chance to choose again, she prevented a woman who looked exactly like herself from committing suicide, or ran away again, inadvertently avoiding a fatal disaster and letting her killer die in a car accident. And she can use money to be happy with her lover (the woman in shorts is the little star who stole jewelry with her in the opening credits).
The first half of the film doesn't explain why it is possible to go back to the past ... I guess the director thinks it is impossible to go back to the past without filming ... that's it.
In fact, this is quite brainless.