Is it wrong of me to be mad?

k so earlier i went down stairs to get something and my mom started yelling at me cause she says i yelled at my 2 year old niece to leave me alone when i wasn't i was yelling at my cat cause she was bugging me then my mom starts laughing with my other niece saying i was crazy then right now when she came up stair she starts yelling that she doesn't know what she did to me then went in the bathroom and closed the door and started yelling that i was crazy in the head i know i might be taking this a little to personal but i have a metal disorder i have agoraphobia/depression and when someone tells me I'm crazy it really bothers me cause when i was little i was verbally abused by my step dad