Deleted sims from Sims 4 gallery

OK, try the repair first.

1. Right click on the game in Origin
2. Hit Repair game.

If that doesn't help do this (I do not believe that those files are in the tray folder but it's worth a try)

1. Make sure the game is closed
2. Rename this folder: documents\electronicarts\thesims4\ to documents\electronicarts\thesims4_backup
3. Start the game. This will create a new folder and all your stuff will be gone.
4. Check the library if you have them back.
5. If that is the case, close the game.
6. Go to your new folder documents\electronicarts\thesims4\ and double click on the tray folder to check if there are files in there. If so, those would be those library items.
7. Copy all files from this tray folder you just checked to this folder documents\electronicarts\thesims4_backup\tray
8. Delete the folder documents\electronicarts\thesims4
9. Rename documents\electronicarts\thesims4_backup to documents\electronicarts\thesims4
10. Start the game again to see if you have them back.

You can also check the gallery under SimGuruZephyr. I will lookup the names for you next time I start the game if above doesn't work