I made a family with a young adult brother and sister. They live near this other family with 3 girls and a brother I made for each of them to have more neighbors and a spouse. When I play with the brother and sister, the other house says ring the bell (nobody lives here) and vise versa - when I play with the 3 girls and brother, it says nobody lives here for the brother and sister. What do I do? I've tried restarting the game. I can let the game sit for a while to see if it can fix itself... ? Help!