I feel you have done all you can do. You've said sorry and you were sincere. You didn't mean to do it. She probably was a little hurt, I think that is normal (I've been called the wrong name in a romantic moment once) but trust her when she says she understands and that it is okay. From reading your previous threads, she (and you) sound like wonderful and very sincere people. I am sure she will move on past this.