how do u deal with a coworker you hate?

how do you guys cope with having a hatred for a co-worker? one that has to interact with you multiple times a day. i cannot stand this bitch for creating an unnecessary situation that causes me take on her job duties as well as my own. and also having to change my hours to maintain coverage. she wants to act like everything is fine and it’s not, at least between us. boss is already aware of the situation and is annoyed at her too. any advice is appreciated. i am dreading this week..