Non-Existent Sim Showing as Daughter

@Sonshine77  There's a known bug where when a World Adventures world needs a new sim, a sim in the active household can be used as one of the parents.  The child just sort of springs into existence, no pregnancy needed.  Is it possible this is what happened in your game?  Normally the other parent is a resident of that WA world, but I guess it's possible that the process would happen to use both of your sims instead.

Anyway, you can try using MC's Total Annihilation on the daughter.  If she doesn't show up on the TA list, try filtering to sims currently not in world.

@puzzlezaddictHi and thanks for the reply! When this happened, neither of the parents (so far this is the only family played in that town) had been to any WA location. This "daughter" just kind of popped up out of nowhere. 

I just loaded the game and got a HUGE surprise! I thought it was a little strange that she appeared in the snapshot of the family when the house was loading and when it finished loading, the girl was standing in the house! She is 6 days old and the girl I thought was the youngest is two days from becoming a teen. So now she (the mystery girl) seems to be a bonafide member of the family now  and she also appears in the list of sims in town.  Her oldest brother had just come back from China so maybe the game glitch was cleared up w/that. I have no idea. 🙂

@Sonshine77  It sounds like Overwatch may have recovered the sim for you.  It still doesn't explain where she came from though.  Did you ever play a different household in this save?  The scenario I'm thinking of is how sometimes babies and toddlers in inactive households get culled by the game, but it doesn't happen all at once, and mods can recover them if enough data is left over.

This is the only family that I've played in this hood. What might have happened is that the oldest son had an opportunity to do something in China. When he arrived, the quest was gone! That also has never happened to me. I wonder though, if this was a way that the game or overwatch or whatever prompted me to take action to correct the error. When he got home, the daughter was showing up in the snapshot of the family as the household was loading and I thought that was a bit strange, but when the household was finished loading there she was!

@Sonshine77  Then I really have no idea what happened.  If none of your sims had been to a WA world, the game would have had no reason to generate a new sim to fill one of those worlds, and there wouldn't have been a stealth pregnancy while you were playing someone else.  I haven't ever heard of this in the absence of one of those explanations, even among regular mod users.  So I don't know what to tell you.

I know this can happen with Ambitions if you use a time machine with "Woohoo in the past" or "Woohoo in the future"

This can sometimes result in a child being born in the other time.

In the past, sometimes you will have an adult child (or descendant) drop by shortly afterwards and then usually immigrate to the world if there is an available slot for them.  If not they'll just run off and never speak to you again.  Either way they land in your family tree.  In the future it can appear in your family tree, but I forget the particulars.

Another case is if the child is listed as only being a child of the sim you married and the other parent being unknown.  Since children default to the mother's custody in The Sims 3, if the Sim you married is male it may not be seen.  This will normally appear when the sim moves in and you gain access to the family tree info.  However, sometimes a malfunction can be corrected when moving between worlds, or when recovered by a mod such as Overwatch, which will recover said sim if it finds the relationship data somewhere else.  If overwatch can't find the other parent it will name it as the best match, which the current spouse.

A final case is if you took over an existing family the adult child might exist, be moved out and have left town. Sims do leave town.  Usually due to there being too many sims for living arrangements, or based on the total sims in town exceeding the number the game thinks your computer (or the computer of the person who created the custom town) can support. 

It looks like your town is VERY small by the number of sims in the town, so yeah, they probably just left town due to there not being room.

As of solutions if it REALLY bugs you that you have an estranged family member the solutions sadly require mods.  You mentioned having overwatch installed.  If you have Master Controller installed as well, you can just total annihilate the sim to make it vanish.

If you want to get the sim to move back in with you, if the relationship still exists you can call them on the phone, and invite them over, then ask them to become roommates.  Depending on how their life situation evolved by the background manager they may turn you down.  (Specifically if they are in a romantic domestic relationship.)  However, in the vast majority of cases they will accept if you get them to best friend status.

Hi again, I kind of forgot about this thread. I've not had very much time to do sims at all. Anyway, the last time I loaded the game, I thought if was kind odd that this child appeared in the family snapshot you see as the house is loading. Lo and behold, when the house was loaded there she was! Just a little younger than the other girl. It's still a mystery of how she came about b/c the parents never went to a WA location nor did they use the time machine or travel thru the future portal. She just kind of appeared in the family tree and now she actually exists! The town I'm playing is a remake of Pleasantview w/all of the re-created original characters.The mother is Brandi and the father is or was a townie. I'm wondering if Overwatch had something to do w/correcting it? Who only knows!