The original files for Supernatural and University Life are located: 128 GB SSD>Users>MeganFord>Applications>The SimsTM 3>The Sims 3>The Sims3>Contents>Resources>AddOns.
I am attaching a screen shot. You can see that it is the same screen shot I sent earlier when you asked me about the folder "The Sims 3" and its size. The contents folder is empty. I can't open the file "The Sims3" because it is damaged or incomplete. But if I right click and select "Show Package Contents" I then have a finder with Contents>Resources>AddOns where I find the original files.