That depends upon a lot or variables....
The question you might want to ask your agent, is: "What would the concequences be for breaking your agreement?"
I practice in Pennsylvania and the laws are different from state to state.
Even so, what you are asking leans more to the side of "LEGAL ADVICE" (which agents should not and can not give) and should not answer outside the scope of performing their contractural duties to you." (unless they also happen to be an attorney in your state.)
My best advice is that you talk out your concerns with your agent. If you feel she has left you out in the cold, then you need to talk to her broker. Your listing agent and her broker have both a contractural and ethical obligation to act in your best interest.
I am curious, though... How long have you been under contract?