I can understand your concern. Sunshinegrl and Aussiebloke have young children and I will be coming into their family. It hasn't happened yet, so all we have to go on is theory, but they're planning on letting them know I'm more than a friend living with them, or 'aunt' ..... Hopefully one of them can speak more on it, but again, we haven't actually gotten that far yet. Not until I finally get home, or just before.
Good luck. Hopefully some others can share their experiences
"Thou art to me a delicious torment." - Ralph Waldo Emerson