Republicans have never been able to warm to her. Warren doesn’t aspire to a bipartisan uniter. She seems to be only an advocate for her specific issues, not a master legislator or dealmaker. She voted against 21st Century Cures Act, which was not a popular decision. Generally, there is not a lot of middle ground with Elizabeth Warren.
You either love her or hate her. Some people think she is too aggressive on particular issues. She also needs to be more concerned about appealing to the independent and moderate Republican voters in Massachusetts.