I would have no idea about all the good in your R because H just thought I should "get over it already, I made a mistake." But I do know that your feeling of security was shattered by H actions and it will take some time to pick up every piece and put it back together.

Just relax as much as you can and enjoy being with H again. The rest will come with time.

Everything happens for a reason, maybe Dad needs to find that it isn't better out there, he needs to realize how good he had it here. Maybe he will find God and that is the most important thing when he finds Him he will know he is supposed to come home.