Okay....

I've searched the internet till I can't see straight for the last day. In the game, I have married Ysolda, I have Lucia as my adopted child, everything has been going great. I have absolutely no mods at all installed, refused to as this is my third time through the game with something going wrong ( Didn't want support claiming it was the fault of the mods ). I came back to my house in Whiterun ( The only one I have at the moment ) and found Lucia not greeting me ( Which is odd for what time I got back she's usually asleep ). Only thing there was her white pet fox, starring at her bed.

I have no quest with her being kidnapped ( I checked as I don't have that NPC at Dawnguard at the keep yet who typically gives those quests ), so I checked all around Whiterun, she's not anywhere to be found. I made sure that I followed the specific times of where she's to be and when. I've done a lot of reloading and waiting, nothing has worked, she's flat out missing from the game. Her PRID # I found is invalid so I couldn't move myself to her or her to me.

Are the children set Essential so they cannot be killed? I would hope so that would be so frustrating. I found no corpse around either, I looked all over Whiterun for that. So the only thing I can think of, she's bugged and gone from the game entirely or kidnapped and I don't have a quest for it yet.

Anyone else had this issue?