Let me first answer your question, to the extent that I cannot give you advice on law in New Hampshire, I am only licensed in Ohio, but what you are describing does not seem to amount to contributing to the delinquency of a minor in Ohio - unless, in the course of those activities you described she committed some act or acts that would constitute delinquency.
That being said, she is a minor - at least in Ohio. As such, she is still subject to her parents' control. It may be well to tread lightly with this relationship for some time until she is emancipated. This is practical - not legal - but the last thing you want is an angry mom and dad looking over your shoulder for some reason to get you into trouble.
Adam C. Stone,
Attorney and Counselor at Law, Ltd.
840 So. Sandusky Avenue
Bucyrus, OH 44820
Nothing contained in this message is to be construed as legal advice. Rather, the general information provided herein is based upon counsel's past experiences as a criminal defense attorney and are not necessarily specific to the facts and circumstances of this matter.