You got a good point about one of your golden rules.
As for other children being related to my daughter, I do wonder about that but important that my daughter has a relationship with my son even if it is long distance. My daughter doesnt know that her former "step-sister" is supposely her blood sister. However, I am not going to share what I just learned with her. Trying to stay out of it as much as I can. All I can say is wow that my ex hubby really has a lot of deep-rooted issues. I am wondering if he has an untreated mental illness.