I've reached the conclusion that this game is just bugged. This is the same game in which the mother keeps getting New Friend moodlets when she hasn't talked to anyone in hours. The latest thing to happen, the child aged up to Teenager and I thought he should spend some time with his father. The mother invited him to visit (he lives in France) and he arrived at 9am, as they do. He just stood beside the mailbox. I tried to get both the mother and child to interact with him, but they couldn't. So I had the mother call again and invite him. Another copy of him arrived immediately, and this one behaved normally. He left a few hours later. Next day, the copy is still standing by the mailbox. He periodically shows hunger or bladder distress, but no one can interact with him and he shows no inclination to leave. I had the mother phone the character and she had a good chat with him, but the one standing by the mailbox just continued to stand there (not talking on the phone). It seems we have created a tulpa. I am wondering if he will eventually leave, die, or what. What a bizarre game. It's kind of fun!