Ottomas family

What's wrong with the Ottomas twins?
There is a known bug in the game that gives the twins a random father (and in some cases, a second biological mother) instead of listing Peter as the father. Their father is always a random Sim. It could be a Townie, an NPC (e.g. the Repo-man or Grim Reaper), a child, a woman, or even a pet. This has led some players to believe that Samantha is unfaithful.

For this reason, many players choose to delete the Ottomas family and make their own version, more a solution is editng the family tree with InSIMenator