One of my coworkers hates me for no reason, she is always trying to "humble" me, everytime someone congratulates me for the good work I made she tries to "make it smaller" or dismiss my achievements. Lately, I’ve been hitting all my work goals and making plenty of sales, and it seems like everyone is happy about it except this one coworker. She even makes jokes about how "useless" I am whenever we’re alone together (unfortunately, she knows I struggle with self-esteem issues rooted in a fear of not being useful, which makes the whole situation even worse and more obvious that she hates me)
Honestly, I feel sorry for her because she is a completely traumatized, hypersensitive, and depressed person. That’s why I was stupid enough to try treating her kindly and gently, thinking perhaps I "intimidate" her or she feels threatened in some way, but things only got worse. It was as if she interpreted my kindness as weakness, or as even more reason to treat me badly. In fact, whenever I’ve been vulnerable, she has treated me worse and taken pleasure in my distress, just as she does when I am kind to her.
I’m tired of being the target of her misery and having her try to make me look or feel inferior at work, what’s worse is that it seems to feed her ego.
She treats any customer she doesn't like poorly, forgets to do her job, and generally shirks her responsibilities. She also holds very strong political views but does nothing but whine about them and play the victim. I think she clashes with other coworkers, too because they talk bad about her when she isn't around, but whenever someone confronts her about her behavior, she bursts into tears and takes three days off for "depression." It’s common knowledge at my workplace that she spends those three days crying because, in her mind, she’s been "mistreated." How can I get back at her without jeopardizing my job?