As she embarks on her spread the blame tour to juice sales of her book, “What Happened,” Hillary Clinton risks becoming a caricature - an embittered sore loser driven by vanity and incapable of accepting any narrative or explanation that differs from hers.The release of excerpts and the hype surrounding her national tour and interviews have created serious angst among Democratic Party leaders who - unlike Clinton - have come to terms with her defeat and want nothing more than to move on with rebuilding a shattered party organization and positioning itself for a legitimate shot at gaining seats in the Congress in 2018.They fear her efforts to relitigate the election will exacerbate intra-party divisions rather than helping heal them and by drawing outsized media attention completely overshadow any attempt to deliver a cogent, credible message to the American people.Hers was a textbook case of a candidate who believed her own press clippings. The storm clouds gathering on the horizon were blotted out by the blizzard of rose petals strewn in her path by the party establishment, pollsters, major donors, a sycophantic staff and hangers-on, and a sympathetic - and, in some instances, unabashedly supportive - national media.She blew $1 billion on a campaign to lose to a thrice-married New York real estate developer who spent about half that. Small wonder she’s bitter.To be sure, she won the popular vote but, in politics, there’s no such thing as a silver medal.