being treated unfairly at work by my manager

I am being treated like CRAP by my manager. At my job there are 3 full time employees and 2 part time employees. Me and another girl are the full time ones. I had to go to my manager about the other full time employee because she wasnt doing anything at work. I was picking up her slack. SO i talked to my manger and found out that her and the other employee have been best friends for four years. So whatever i complain about she doesnt do or say anything to this other employee. So i had to go to the owner. I told the owner what was going on and the owner knew the girl wasnt doing her job because she was previously fired for the sam e reason. to make a long story short. My manager found out that i had went to the owner with this list and she went crazy!!! She verbly abused me. Told me I was a liar. Now when I go to work she ignores me. She yells at me infront of customers. One of the part time employees told me she said she is trying to get me to quit.