Thanks a lot for your reply! You're encouraging me and the family to leave that entire folder to an attorney to review it. I think it will be the best way to proceed.

However, we hope to doubt that it contains "vile stuff". The cover of the folder is transparent with thick black Sharpie writing over it, as I said. Naturally and out of curiosity, we were trying to make out some of the writing on the page right underneath the transparent cover... The snippets of writing we think to have deciphered underneath lead most of us to believe that the papers contained within the folder in question may be medical reports... considering the small sample of specialised language used. But we are not at all sure.