Hi My first post, would really like some advice, my mostly lovely 17 DS has been not coming home after parties, not answering her phone/texting back so i don't know where she is, i grounded her for two weeks after two nights of this and swearing at me, i allowed her to babysit for a friend round the corner during the two weeks, which turned out to be a lie, she was going to a party. i have talked to her about wanting to know where she is as i can't sleep otherwise, she agrees that is reasonable but then does it again. really not sure what to do?