I should hit my tennis partner with my tennis racket.
That seems cruel. Why did you want to hit her with your tennis racket?
She always tells me that she lost the point because of me.
It can be upsetting when you lose because of somebody but you shouldn't hit your partner. You can talk to her so that your partnership doesn't suffer.
You are asking too much of me, I just want to go and hit her, then she might stop annoying me.
I can see that you are really upset that she blames you for losing and that is okay. Maybe you should try to get another partner who doesn't want to try to hurt your feelings.