I feel mistreated by my family?

[Rachelle_Marie]

My family have all of a sudden become not as important to me anymore because of years and years of being mistreated. My mother has flat out said she wishes I was never born, blames me for her heart problems, calls me the devil, and says I'm overweight. I am 17 years old 5'5 and 130 lbs. My twin sister is similar to my mother and we absolutely dont get along. A lot of my friends dont like her and wont invite her to places because she's not a friendly person. My mother doesn't see that and blames everyone else. I'm not aloud to go hang out with these friends unless she is there which I feel isn't very fair. I got grounded yesterday because I lied about going to the movies with my boyfriend Saturday and instead went to one of my friends parties who doesn't like my sister. I should've gotten grounded for lying but what else is there to do? please help.
If i do bring her anyways I will never get invited anywhere again and will lose all my friends.