I am very new to posting online and even newer to asking for help. I have a daughter who has just turned 18, is still in High School, and still lives at home. Her behavior of late has been, to be honest disrespectful, she constantly lies about everything. Even the smallest of things. She is now dating a "boy" who is for lack of a better term a thug. I recently found out she has been smoking pot with him, but to be honest I m not so sure that is all that she has been doing in regards to drugs. When she is home she secludes herself from the family in her room and just sits on her cell phone ( that I pay for). She is often sleeping the days away when she is home. When I look in her eyes it is really obvious as to what she is extremely high. Her behavior has always been somewhat horrendous. Only a few times being brought home by police ( shoplifting). But since she has started dating this boy, it has gotten so much worse. She has been skipping school, and where she once had straight a's in her ap classes is now failing. I am not sure what to do with her at this point. She says she is 18 and that even though she lives at home and is still in school she can and will do what she likes. I disagree. I feel that if she is living in my house that my rules apply. Which are mainly No drugs, and no skipping school. She goes out on weekends and drinks and does the smoking pot. I also have a younger daughter who is 13, and I don't like the example that she is setting for my younger daughter. Her father passed away 5 years ago, but was not active in her life before his passing. So it is just me who is dealing with this. I am scared that she will end up doing something I.E. drugs, alcohol overdose, theft or other breaking of the law. With all her issues before I still saw so much potential. Now I see her throwing her future away. I was thinking of shutting off her phone, but then I am scared if I do that then I will not be able to get a hold of her in an emergency. Any help, advice that anyone might have would be greatly appreciated.