Is it starting to make sense why she filled 120GB? She essentially had two whole operating systems on one computer. Not just her personal files, but the system files of the old computer, the applications, the cache. I decide to open it up, and it's literally all of my mom's old computer. So I went and checked 'Get Info' and it's 43 GIGABYTES. Well, lo and behold, this singular file that the data recovery place gave to her was on her desktop. They then gave her a file with everything that they were able to recover. UPDATE: I looked over her computer and it's important to note that her old computer's (also a Mac) hard drive broke in 2015, and she took the hard drive to one of those data recovery places.