Any way to force her out sooner?
She can always resign. President Trump can make it clear that he has no confidence in her, at the risk of politicizing the Fed Chair, and that might do it. But criticize her for what? Raising interest rates, something Trump was criticizing her during the campaign for not doing?
The other thing that people are overlooking is that it isn't Yellen who raised the rates, it was the Fed Open Market Committee of which Yellen is only one vote of 10.