I agree with Jack. Usually a true scraper is relatively flat on one side and the bevel is on the other. You can "scrape" something with almost any flake, but to scrape a hide or something that requires durability, one needs to sharpen a flake on one side so it can be resharpened when necessary. What your friend might have could simply be a flake that was used as a tool of some sort. There were 101+ uses for flake tools from cutting to scraping arrow shafts. Pictures would help us nail down possible uses.