Re: Can A Sim Remove Itself From Their Family Geneology?

@Adorablebliss Wow. Wow... I feel like I just watched a whole steamy soap opera summary. 😉 That bunch of Sims has gone wild! A few points to make that may or may not be things you know or are interested in...

• You are obviously using at least one Mod, so it's hard to say if that may have caused the altering of the family tree, either by intent or via a glitch.
• Just in case this is relevant, if you moved 'Star'(? - I will refer to her as Star even if this is the wrong name, for the sake of clarity) out of the household by adding her to your 'Library', then re-added her to the game, this would have severed all family tree/relationships with anyone who was not saved in the same household with her to the library. In other words, when you move a Sim household to the library the only relationships and family tree that remains for them is that of anyone that is also saved to the library with them (in the same household).
• If you want to edit family relationships for any Sim you can do so as follows (via cheats):
  
  Method One - works to alter relationships within household:
  (You could move all of the relevant Sims into the same household temporarily to do this – Merge Household, Split Household – if you like...)
  1. Enable Testing Cheats
  2. Enter in the cheat bar: cas.fulleditmode
  3. Shift-click the Sim and choose 'Modify in CAS'
  4. Go to 'Edit Relationships' (next to the voice settings). If all of the Sims you want to change relationships with are in their relationship options there, you can choose them and change the relationship in the drop-down.
  
  Method Two - works with others outside of the household also:
  1. Enable Testing Cheats
  2. Prepare by getting the 'Sim ID' for the Sim(s):
  *How to get your Sim's ID:
  Enter in live mode the lot where the Sim is. 
  Open the cheat box and type in: cheat sims. get_sim_id_by_name (First Name) (Last Name) 
  Example: sims.get_sim_id_by_name Reese Cheung
  
  Hit enter. The ID should appear for that Sim.
  
  Note: This also worked for me to get the ID of a non-household Sim who was visiting the lot.
  3. Enter the following information into the cheat code box:
  relationship.add_bit {yoursimID} {targetsimID} {relationship}
  
  Replace yoursimID and targetsimID with the Sim ID*(See #2 - above) of your Sim and of the other Sim...
  
  ...then add the one of the following in replacement of the term relationship
  romantic-Married
  family_husband_wife
  family_grandchild
  family_son_daughter
  family_brother_sister
  family_grandparent
  family_parent
  
  Method Three
  Use a Mod. I think MCCC may offer the option to alter relationships?