I made two Sims, who were boyfriend and girlfriend. I killed the girl by starvation with testingcheats, and brought her back with the "Oh My Ghost!" opportunity. They had a daughter, who, to my somewhat disappointment, was a regular sim. When she was a toddler, I thought it would be romantic to teach her to walk in the same place they had gotten married. The ghost mother picks up the toddler... the NORMAL SIM toddler... and passes right through a wall holding her. How'd she pull that one off?