I've tried that and I have tried the cheat to add relationships and none of them work. My main sims has 3 siblings and her parents died. Her mom became a ghost and her dad completely disappeared. He doesn't even show up on the geneology tree. Her mom is still on it but her siblings are step siblings now. I brought her mom back to life to try and put dad back in the picture but it won't let me add him as the father to her or any of the siblings. I don't know what to do and i'm really becoming aggravated.