I wouldn't confront this person. If she's nasty, jealous and vindictive the worse thing you can do is ask her why she behaves this way. (Sorry just Dahlia!) It will just put her on the defense and you'll be in a worse position with her.
If this is upsetting you, the worse thing you can do is talk to her and get emotional. Then she'll know that she's really got you.
Instead I'd talk to the boss. This is a workplace relationship issue which is affecting your work, and you're being given work that you can't do. It's up to management to deal with it, not you.
Keep it at the professional, not the personal level, and let him know that you're having difficulty doing the work. While you're there you might ask if he/she has any problems with your work output or your behavior as you know the security tapes are being checked. Let them know that you're doing your best and that you'd like to do better if there are any problems with your work. See what they say.
Record in writing any of the lies that she says about you keep your nose clean for the security tapes. It's head down bum up with this sort of person. Be squeaky clean, and keep your reactions to her vindictive behavior to yourself until you catch her out in a lie. Eventually she will shoot herself in the foot.
|