"Bitchy co-workers"

I am so sick of my fat-ass jealous co-worker, trying to undermine to me a every turn! She's jealous because I'm half her age, and I get more responsibility than her and that I currently have the job that she used to love, but now she had to move to a different department because she sucked at it because she was lazy. I dont know if she tries to undermine me because it makes her feel better about herself or what, but for some reason, she feels the need talk down to me and treat me like I'm an idiot. I've tried talking to her boss but it does no good bc she's a huge ass-kisser ( not just that she has a huge ass)so her boss just backs her 100%. So basically any complaint that I have just falls on deaf ears. I dont know what to do about her, but I think if she doesnt lay off I'm going to strangle her fat-ass, so she just better watch her back and stop thinking she knows what's best by telling me what to do, that fat fucking lazy fucking fat ass fucking fat ass whore ass fat ass fucking fat whore fat ass angry bitter ugly bitchh whose loud obnoxious ugly and no one even likes to begin with. Fucking ugly fat cunt-ass whore slut bitchThat's all I have to say about her fugly ass.