Files missing when trying to send as an email attachment

I have installed Microsoft Office on my MacBook Pro. I have about 75 files and folders under "Word Docs" When I go into Word Docs they all show up. However, when I want to send a folder as an attachment to an email only about 3/4 of the files & folders are present. Therefore, since the folder I wanted to attach was not there I could not attach it. However, when going back into my Word Documents directly they are all present. Is my computer haunted?! Anyone have any ideas?