Well, first of all how old are you? if you are a teenager , then well at this age many tennagers seem to have problems with thgeir parents but , from my personal experience belive me ask yourself if i was a parent how would i have treated my child?, what would i have wanted her or him ro do? and try calmly and Serouisly speaking with your mother because communication would be an imporatnt key in your relationship, try to be tolerant, and see what she like and what she doesnt like , im sure then she will see in you a person that is trying to please her . and she will start treating better , more over ask Allah to help you and pray belive if you ask Allah Allah will help you , try to help her , sometimes just giving her a cup of water while shes in the kitchen or shes doing house chores can have a big effect on her heart, also try being kidn to your sister and make it from the heart not because you want to prove to your mother you are getting better or anything but this will benefit you in the future , studies say that people who have good family bonds are more likey to succed in their own families when the decide to settle down . i hope i helped 
