I understand, if you've sincerely changed then you may be wanting to see things from a different perspective, to see how you would handle them now. Everyone is right that it is probably a bad idea, but if you really can't get past it, then you might as well try. You don't really have anything to lose, thigns can't really be any more fucked up then they are now...
however, if that isn't the case, if you are unsure that you have changed and that there is a possibility that things could go back to the way they were in a bad way and you can't handle dealing with her at her potential worst and not changed at all, then it's not worth it no matter what.
however, if that isn't the case, if you are unsure that you have changed and that there is a possibility that things could go back to the way they were in a bad way and you can't handle dealing with her at her potential worst and not changed at all, then it's not worth it no matter what.