I've been playing "name that feeling" for a while now about my unexpected positive feelings about my sister having my niece. I finally just figured it out: I feel this: "Thank God she has a chance to do this the right way". Her right way may not be my right way in many regards. But she will not ever abuse Miss Anne and that's huge.
Another strange thing? I am terrified of men with beards in general. It's an abuse thing. Once Dr. Mind grew one briefly and I had a really hard time being with him. In fact after Christmas he came in deathly ill to make sure I was ok and he hadn't shaved or anything else that day except try to stay alive. He was so sick he came in just for me, cut that time short, and then didn't work for a week. Even his one day not-shaven face was scary. But my brother-in-law has grown a beard and while I'm not going to hug him, I am not afraid of him. Apparently I have a lot of respect for my sister and her husband that I didn't see behind the jealousy.