I'm so sorry you have to put up with this, graystreet I agree it's a terrible behavior, and very unprofessional as well. Like divine1966 has wisely suggested, I'd try to talk to whoever is in charge there and report this behavior if it's bothering you that much. I think you have every right to have a safe workplace. I'd also suggest to ignore this person as much as you can, talking to her only when it's absolutely necessary. And if needed, please don't be afraid to stand upf or yourself and speak up. After all, one person can only take so much, so please don't feel guilty about it. I think anyone would have snapped at that point - actually, a lot sooner I think! I'm so sorry. I hope things will get better soon for you. Please don't give up. You can do this! You're strong, I'm sure of that. I hope writing here helps a bit. Feel free to PM me anytime. Let me know if I can do something to help you. Sending many hugs to you