I have decided to end my contract with my agent. It was a very, very hard decision to make, but I feel it was the right one. We worked together around eighteen months, but there was little to show for our collaboration. So after much agonizing, I asked to be released from my contract. She was very polite about it, and we are still waiting on two submissions, so we'll still be "together" until those play out.
From what I understand, this isn't unusual in the publishing world. It's like any other partnership. Some work; some don't. My mentor has had three agents in her career. As emotional as I am, this was horribly difficult for me to do.
Now I need to decide what the next step is.