PARENTS OF ESTRANGED ADULT CHILDREN Community Group
Parents with adult children who no longer communicate with them are becoming more and more common these days. This group is for those who need to connect with others in similar situations who understand the grief, pain, and array of emotions that they go through daily. If you are seeking support from other parents who are suffering, a place to vent your feelings, and...

I guess the person that leaves, thinks somehow it is easier to walk away then to try to deal with the problem and try to come up with a solution that everyone can work with.
All I can say, to those who have been estranged, it must be difficult to not blame yourself, however, you were not given the opportunity to try to solve anything prior to the person leaving which is not your fault. Please don't blame yourself or let guilt let get in your way of living your life.
wishing you find peace.