If you have hired an attorney and the attorney has filed a Notice of Appearance, Written Plea of Not Guilty and Waiver of Arraignment, you do not have to attend your Arraignment. The only exception in Leon County is the Juvenile Division which requires that a Defendant make an Arraignment appearance. Your attorney is correct, if she has filed the proper paperwork you will have waived Arraignment, and no warrant will be issued for your arrest.
This is the kind of question you should be asking the attorney that you hired.
If your attorney has filed the correct paperwork and waived your appearance, you do not have to be at arraignment. You can check with her or the Clerk to determine if this has been done.
My greater concern is that you say "she is a great lawyer but very unreliable." I have never known an unreliable attorney to be a great lawyer. An unreliable lawyer is just that, unreliable. Such a lawyer will miss deadlines, not properly prepare or investigate a case, and fail to appear for court or keep the client informed. If that is your attorney, I would find another one. You hired your lawyer to do a job for you. It is up to you to make her do that job, including keeping you informed.
Trust your lawyer. Don't you think you're better off trusting the lawyer who knows your case, rather than asking a group of lawyers who know nothing about your case questions? Trust the lawyer you have. Communicate with her when you have questions, doubts or insecurities about your case - she's your lawyer.