K.S.
My siblings and myself went through similar events growing up. The best thing to do is to be a rock. Dont let them see you fighting or getting upset, and dont talk about the mother. My mother is the rock, and until I grew up and started a family of my own, I never new how many crazy out of this world things she had to deal with in raising us. I always respected her and knew, no matter what situation I found myself in, I could trust and depend on her. Best of luck to you.