My mother is unjust to me. She unnecessarily screams at me and accuses me falsely.

Answer

It is not permissible for a child to argue with his/her parents even if they are unjust. You may speak and reason with them politely and respectfully. If they are obstinate and unjust, you have to maintain silence. It is not permissible to react and retaliate in the way you do. Your mother's attitude is aggravated by your attitude of back-chatting and arguing with her. You are not dealing with her as a daughter is required to by Islam. If she reprimands, rebukes and insults you, just lower your gaze and maintain silence. Don't ever raise your voice when you speak to your parents regardless of their injustice. Your acts of ibaadat are rejected by Allah Ta'ala for your disrespectful attitude. You just have to tolerate the injustice of your mother.