Just remember one thing hun, Charles Dickens never took any kind of creative writing class and barely had an education yet he is one of the greatest novelists of all time. Just remind your friend of that if she decides to try and be snobby again
Writing comes from the heart and imagination and true literature skill can't be taught it can only be helped along a little. If you read plenty of books over various genres and study the authors writing techniques yourself that is just as good (and recommended by many successful authors) so just don't listen to anyone with such closed minded views
