the DC inevitably have to compartmentalise their lives through separate parents, and going between homes.
What you have, in keeping the weeks quiet with a single place of living that they regard as their home is vital.
Sadly what happens that causes such catastrophe and abuse to the DC is trying to own the DC. Where they are is home and fighting over one week DM and the other DF is a very tall order for DC, continually on the move, homework books in different places. The teachers I have spoken to (have many as personal friends) have confided this is normally underneath problems surfacing at school through divorce, although it may be that they end up this way because of the NRP fighting for ownership and its an abusive mess for the DC as a result.
The DC are just looking for consistency and stability. There are lots of things that rock their worlds when growing and its how its managed that matters and makes them strong. They will grow from this and learn a mature emotional response to such issues! they really will, because this is what both of you are showing them.
The only concern I have niggling in the back of my mind, is whether DF is still very dependent on the setup and hasn't actually really let go, because if so this could blow up sooner or later when you move on more?
With this situation it can be a little hard for the DC to accept that it really is final and in true film style spend their lives trying to get the parents back together! So whilst keeping them out of the adult relationships its also about telling them enough to make it really clear that the marriage is finished and for adults to make it legally binding and so on.
I also wonder how much involvement/responsibility/caring you still adopt for DH, with his depression and so on?
I think friends might wonder if they see that you aren't so separate? that you might be in a co-dependency instead? and not ready to fully separate?
Only you can know this, of course, its not for me or others to tell you how it is for you both. Having been through it the very nastiest of ways its a refreshing change to see two people being responsible and putting the DC first! it really is. Its hard to know that you are emotionally disentangeld properly until he or you have it shoved in your faces, like seeing the other out dating, thats when you know how you feel, deep down.
Always that is awful abuse from your father, very classic, but its still a bloody good job that your parents divorced and you only had to endure this 2 hours a week! A huge positive that you had most of your weekly life away from his influence and the awful influence he'd have had on your mother's ability to mother you both whilst he was there, with him gone she was able to show you the way like you are doing for your sis! cool!