Sofia - The Funny Fully Voiced Follower Mod
MODSkyrim's most endorsed follower is back for more in Skyrim Special Edition.
If neither of these show up then it is very likely that Sofia is not installed or activated correctly in your game.
If you are unable to retrieve your belongings due to her glitched out state then open the console, click on Sofia and then use this command: "openactorcontainer 1" (without the quotes) to force her inventory to appear.