I was very young when I had her and I was unaware of my disorder. I have said some pretty mean things to her when she was little and I even left her with my mother for a week when her father and I split for the 1st time. I’ve since become aware of who I am through my diagnosis and by taking meds. It makes me feel terrible now even thinking about it but I can’t change it and she and I are inseparable to this day . I would like to add that I’m not in any way taking away from the damage that mental or emotional abuse causes. I understand that all too well. I’m simply stating that the question is very vague in terms of “Safe” and that by safe I interpret that as loving my children. Caring for all their needs. Food and shelter . And I should also add that the disorder differs from person to person. And so there is really not an answer. It would all depend on the individual with borderline.