From her statement to you, it sounds like you signed a short listing agreement that has now expired. If she has told you that your listing agreement has expired and you have that in email than I would save and print the email for your records. If your listing is expired than you are already out of contract with her and need no additional steps. Then I would list your home with whom you are comfortable representing you. Be sure to interview a few agents and pick the one that is being upfront and honest. If you are concerned about communication because of your current experience then ask if you can speak with their current seller listings for references. If they are providing great service it should not be an issue.
In Florida the agent Must give you and their office copy of all paperwork you sign!
Call her broker, discuss the situation and the renewal problem. The broker will see that you get copy of all the paperwork! and will handle the renewal.
Best of luck
It is not Christmas anywhere in the world yet...you are at the stage you need to deal directly with the agents Broker, and do not take any excuses for an answer.