Yeah! It's creepy. When the woman that I mentioned in the OP first started acting out on me, I could hardly believe it. It so went against everything I knew about her. I told my friends and they were like, shut up, she's just a sweet little lady! Then she started doing it to them. Then we started hearing from other people around the firm about her history of behavior. But the bosses never see it. Even with us, she'll act like she's being all benevolent, WHILE she's stabbing us in the back. IF you try to call her on it she'll say, I'm not going to fight with you and she just turns her back on you.
I always hear her telling people, "Some people try to fight with me, but I'm just not a fighter, I'm too shy to stick up for myself that way!" She always says that about her husband, he just wants to fight with her all the time. But in reality what she is doing is engaging in hostility, blaming us for her mistakes to the bosses, lying about other things to them - then acting like the person she does it to is hostile and crazy and just wants a petty fight when they try to discuss it with her. Wallah, she never has to admit to anything.
Then her "victim" is in the I imagining this zone? You are exactly right, League Girl (PS Hi!)
The whole thing is fascinating in a way, it's like watching a human spider at work.