I have 6 step children ranging from 24-44. Older ones just lovely and I love them dearly. Younger ones from day one (12 years ago) have been just awful. A few years ago I suffered a breakdown and psychosis which led to me attempting to take my life and being sectioned for two weeks. Up to that point every time they tried to wxclude me, disregard and ignore me he would say you're the adult be the better person. He never backed me at all.  Not until the breakdown. then things seemed different and he put me first. Step daughter had her graduation and didn't invite me.