#3
26th Jan 2019 at 12:34 AM
The gallery is an option, but so is Sims 4 tray importer. You'd have to download that, but it's very useful for finding broken cc and for sharing Sims.
You'd put the cats in their own household and save them to your library (if they're already saved, you can skip this step).
Exit the game and start up Sims 4 tray importer. You'll see the families in your library on the left hand side of the program.
Find the family with the cats (if byou just saved because he's, they'll be at the top, if not you'll just have to look).
Once you click on the family their info should pop up on the right. From here you will be able to save the tray files for that household separately and give them to your sister.
I know it's not a . package file, but the tray files can be put directly in her tray folder (found in her Sims 4 documents like the mods folder) and the family should show up in her library.
I hope this helps. Happy simming.