My sim became pretty good friends with Agatha Crumplebottom, and then one stormy night I saw her running through the rain and tried to call her in, away from the lighting, but the only options were all introductions... at first I thought maybe their friendship levels had just dropped suddenly for whatever reason, but then I lost sight of Agatha and tried to focus the camera from the relationship panel... they were still friends! There was no camera to focus, because the friend Agatha wasn't nearby!
I invited her over just to make sure, and as soon as she showed up, the second Agatha ran right past her! I had my sim introduce themself, and now there are two Agatha's in my house! Will this break my game?? Why are there two of them??