I'm sure you will be fine tomorrow, just remember you are the sane one and try not to react to anyone. A friend of mine who was very successful professionally was seldom, if ever troubled by people like that because when they treated her like that she would be sure to say, "I'm sorry that you have such a problem with me. I really like you and everyone here." This kind of gets rid of the personal attacks, though if she's going to attack, it only makes her look bad. I've had people do that to me, especially as a consultant and outsider who was threatening to regular employees. I just acted very civil and ignored as much as I could, but if they went to the boss, I tried to nip it in the bud but doing what you are doing. It is probably best to talk to your boss one on one alone and find out what your boss thinks of your performance. If your boss isn't worried about it, then the pain in the neck will just make herself very unpopular. If your boss has concerns, all you can do is find out about them and focus on what you have accomplished and what you can do to make sure the work you do is documented, so that such rumors can't be spread about you. You can also focus on how damaging this harrassment is and if you have employee assistance program, get them involved. Also, it is good to get things in writing from the bad employee and your boss about what they think of you, so you can demand to only converse in writing, at least with the pain in the neck person. If they have a problem with you they can put it in an email to you That way, you can sue them if they cost you your job, which I doubt would happen. After they send you one or two incriminating emails, you can thank them for documenting their slander and show it to your boss and let them know that in no uncertain terms are you going to put up with unsubstantiated rumors and slanderous remarks.
Hopefully, your boss is not concerned and knows how hard you work. If so, just tell your pain in the neck coworker that if she has a problem with you to please put it in an email to you, that you will not tolerate those types of conversations at work. I made everyone send me emails, even people who liked me. It keeps the workplace quiet for other people trying to work and keeps people from acting like idiots and being abusive, most of the time unless they are really really stupid. You can sue someone personally for such behavior.
Well, I hope this helps some and I get a horrible feeling about confrontations of this type. Thats another reason for emails. Be cold, be quiet, and get it in writing, i say. I wish the best for you and I know when the chips are down you will be strong and handle things well. I do think it is so important to get her negative comments in an email or two and to keep her comments and opinions limited to emails until you can get her reprimanded.
Take care and I will be rooting for you. Just don't react or complain like her, just focus on you and what your boss thinks. I wish you the best and you will be in my thoughts and prayers. And don't dread going in. This is just part of the crap that is why they call it work, you are not in the wrong. She is totally out of line. You are the victim here and feel good about working to put an end to it. You don't have to confront her or even get into a conversation with her, just tell her to put it in an email and then walk away, end it. If she goes on, ignore her, if she won't leave, then you really need to get some help from your boss or employee assistance, because that's kind of crazy and frightening. Take care. I wish you the best.
--Doctors are men who prescribe medicines of which they know little, to cure diseases of which they know less in human beings of whom they know nothing.--Voltaire (1694-1778)
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