Calling her a socialist is a denial of reality. In 2008 she was appointed to lead the Senate committee that oversaw TARP among other things. Bailing out banks is not exactly socialist! Her CV is filled with academic appointments where she taught or was dean at various law schools (in Texas, even!), and in about 2011:
Although she published in many fields, her expertise was in bankruptcy and commercial law. In that field, only Bob Scott of Columbia and Alan Schwartz of Yale were cited more often than Warren.
She is actually fabulously qualified. But I guess qualification doesn't mean much when we have a game-shoe host as President.