Please consider reading/listening to Stop Walking On Eggshells by Paul T Mason MS and Randi Kreger Taking Your Life Back When Someone You Love Has Borderline Personality Disorder. There is also a book for parents of children with the disorder. I also recommend the MedCircle website and YouTube channels for more information and tools on this and many other mental health topics. Dr. Ramani is one of my faves at medcircle and she is very knowledgeable on BPD and other disorders, explains in layman’s terms.