From experiencing being a teenager myself, just give her some space. Some teens go through a phase where they just want to be their own independent person... you shouldnt take it personally... it is just her trying to find herself..it is hard to explain, but it will get better... just give her the space she wants, but still keep your ground rules... still be supportive, and whenever she wants to talk, make sure you are there to listen, it is truly just a phase that most girls, these days, are going through. when she comes home, try not to ask too many questions... give her the space that she wants... sometimes it is too much.. with the stress of being a teenager, working, and trying to find her spot in the world.. it can be too much sometimes... as long as she know that you are there for her when she is ready to talk... no matter what time or how busy you may be... if you stop to take the time to pay attention to her when she needs you, she will always come home... you are her mom... that is something that will never change.. and her love for you will never change either... it is just a time in her life that is changing... she has to do this by herself.. just be there for her...