CHRISTIAN PARENTS of ESTRANGED ADULT CHILDREN Community Group
Estrangement makes it difficult to talk about with family, friends, neighbors and church members. Christians are NOT immune to broken families. Talk about your experiences with those who know how you feel and get positive support through your Christian faith...."In these last days difficult times will come, for men will be lovers of self...disobedient to parents,...

Your ES seems to care about you. Would he be willing to talk with your DH for you if he knew how much it meant to you? Or is the problem really coming down from your DIL?
I think for your well being you must take yourself out of the situstion and give it to the Lord. You could let your ES know that you see no other good way to handle it. What do you think?