More testimony to Rand's irascibility comes from John Hospers, with whom she was friendly ca. 1960: http://johnhospers.com/Articles/Conversations2.html (do a text search on "Aesthetics" and read his account of her behavior at an academic conference). As Nerian mentions, there's another side of the story, which we get from Peikoff, Valliant and others. One reason I'm inclined to be skeptical of them is that the people who say that she could be unreasonably angry are evenhanded and enormously respectful of Rand - NB, BB, Hospers and others. The Peikoff/Valliant circle, by contrast, are capable only of badmouthing anybody who crosses them.