RE: Time Travel: An Escape From Regret or a Path to Healing

If someone like her were allowed to correct her mistakes, she would choose her career instead, and maybe her life would have been better.

Here the word may be itself is uncertain, there is no surely thing that she will in a good condition of she choosen the carrier at first place. The future is uncertain even if someone got back in past and make the changes still the future which is going to change because of those changes is again uncertain.