With Elizabeth Warren no longer taking lumps from both Democrats and Republicans in Washington, a new image is starting to emerge of the Harvard law professor: one that portrays her as a down-home, Oklahoma-raised, fiscal conservative who argued against excessive lending and borrowing only to find that associating with Obama’s administration cratered her work, killing decades of research in the eyes of a fickle public that only views her as an employee of an unpopular, ideologically driven president.