That's because she messes around with the sharing options. Red means that the file is not being shared.

It's much easier to just use the explore function. You don't say which OS you use, but eg. in WindowsXP when you highlight your saving folder and press explore, the folder containing your downloads opens up. In that folder you can choose to display date and time the file was created, and then you can sort according to that:

Just right click on the bar: