>>3
Boy, it sure is a good thing that we civilized people have gotten rid of this silly concept of the "rule of law" and rely on the Wiccan Rede to govern interpersonal relations, eh? Legal consequences are so second millennium, after all.

>>1
How old are you now, how long ago did these things happen, and how long ago did you last feel like doing such things to her? Do you have access to a counselling service at school or the like? Depending on how badly you suspect your parents are likely to react, it may be wise to seek the advice of a mental-health professional first of all. However, it certainly would be better if you told your parents before she did.