This is an article I came across by Northumbria University - I don't know what year it is or what journal it might be in, but the title of the study is:
"I'm Finally Allowed to be Me": Parent-Child Estrangement and Psychological Wellbeing - by Audrey Helen Linden and Elizabeth Silence.
A link to the article is here:
https://researchportal.northumbria.ac.uk/ws/portalfiles/portal/21177060/Linden_Sillence_Parent_Child_Estrangement_and_Psychological_Wellbeing_AAM.pdf
I am looking forward to reading this article in more detail - so far I've just skim read it, but I already relate to some of the things mentioned, and it is thought provoking for me. I hope others will also find it interesting.
Hope
Thanks!