I have just turned 23, and loved those kinds of activities since I was 13. The only difference is my parents had no clue what I was doing. The only thing I can say as a younger person is please please do not react in a manner that would alienate her. Bite your lip, hold your tongue, but don't let her feel like she cannot tell you certain things because you would flip out and faint or something. It is normal for her to go through this stage, and it is normal for you to flip out as a caring parent. I know it's easy to say, but try not to show how scared or concerned you are. Things would only get out of control if your daughter does not feel comfortable talking to you. As long as she calls you up and tells you all about her crazy experiences, everything will be fine.
