Hate's a strong word but you know the situation & I don't. First try to avoid the person, if it isn't a relative you don't have to be around them. If they're bothering you with questions, reply that you're busy, giving you a hard time ignore them. See if a friend can run interference for you, or distract them long enough for you to make an exit. If you can't avoid them do to scheduling, talk to the 1 in charge & see if your schedule can be changed. If not possible show up for whatever on time, not a minute before-at least it'll reduce the time of confrontation. It that fails tell them that they're bothering you & you prefer to be left alone
Part of growing up is accepting that there's always gonna be someone who you don't like around you, and that there isn't always something that you can do about it. If avoiding them or confronting them aren't options, then you might just have to deal with it.
if you hate someone! it means you are a human!!! If you start by hating someone, this only mean you will eventualy really apreciate that person. But that will happen once you get rid of your EGO and try to understand why you hate the person. Then go talk to the person. Just don't stay in the dark. The longer you stay in the dark the worst it gets for your psyche.
When you hate someone, they probably reflect a part of you that you wish to change. Acknowledge it and work on it with yourself. As for them, never show them your feelings and don't share it with your friends or family, i suggest you write them down in a diary, you share them with a counselor or shout them out in your own room, do it for as long as it takes, it might take years, don't be surprised and don't suppress your feelings, but most importantly, when you are around that person, smile, & be friendly if they hate you back, they can never stand up to you when you initiate kindness, it will play havoc with them. And don't worry about the feelings of hate, we are humans and this was Given to us by God so we can learn how to deal with it, no one comes to this earth & not feels it, just remember that the only taboo is to hurt someone, you cant hurt anyone because you hate them, even if they have hurt you, be a better person and show kindness, it"ll kill them on the inside. I am not asking you to accept their behavior I am asking you to become a bigger person by proving to them that their method didn't work.
Just ignore her,don't talk to her,if she asks you a question answer with yes,no or i don't know!!!Don't pair up with her just be you and someone else but remember don't be to hard on her!!!Oh and one more thing just don't be who you are, be someone else so she falls in love with that person not the real you!!!Just be careful and be kind!!
Just try to let that person know you hate him. If he really pisses you off and you cannot stand it, just try some ways that are not so serious to vent your anger on him. And be kind to everyone else so that he can see that you are a very nice person but he does not have the perfect character to be friends with you.