You are free to move forward with any Attorney that you want to. I would try to work things out with her if possible because you have come so far. Your Attorney would have to notify the Court that you want to move forward with someone else, but the process would not have to be restarted.
I don't practice in your state, but the Constitution extends to all Federal issues. I make no promises as to accuracy outside of my expertise, and answer all questions from my home state.
Yes, when you hire new counsel, you do not have to start the divorce process all over again. All you have to do is hire another attorney, and your new attorney would file a Consent Order Substituting Counsel. Your new attorney would just pick up and move from the current status of the case. You need to let your current attorney know that you are going to meet with other attorneys to consider a change of counsel.
Sign up to receive a 10-part series of useful information and legal advice about the divorce process.