Basically he goes into the future and then back to his past exactly where he left to stop himself from committing the same action

@SomethingSomethingSomethi,  isnt that... like the grandfather theory, yk abt it?

@Gojo's Lower Half ?, yeah kind of, but in this story he basically resets everything. So after he stops his bad decision, his great grandaughter wouldn't come try to get him as she wouldn't exist in her current form and would also have no reason to come back since he comes back right before to stop himself. But you do make a good point