all out on her. help me! any advise.? I have a 16 year old sister that constantly gets into arguements with my parents making me have to hide out in my room every night, this night is no exeption, this sister swears a ton in front of my parents and throws a bitch fit every time she doesnt get what she wants. She treats my parents like crap. My parent are close to sending her of to boarding school. She may be crazy but she might be taking drugs too (she refused a drug test), and she has already come home completely drunk to the point that her boyfriend had to carry her in and she pissed on the carpet. She also seems to be in some sort of denile when it comes to who started an arguement, can anyone tell me how to handle this and whether this is at least semi-normal.