The answer lies partially in the wording of the question. "Attempt" and "Intent." An "attempt" to do something, or an "intent" to do something, must be proven and/or shown to have actually, but unsuccessfully, occurred or attempted. If there has been nothing but verbal threats and ranting and raving, perhaps there are grounds for "harassment" or some type of other charge such as "threats to do bodily harm," or "threats made in a menacing manner" (if those types of offenses are even on the books in your jurisdiction).
Parents.
That depends on your parents and local law enforcement.
absolutely
Parents, air line officials, police, church ministers and priests.
Tell your parents.
Kdis parents teachers and administration school board
Dancers, Dance Teachers, Dance Parents, The competition Officials ect.
Your employer if using a company computer, your parents if you are a minor, and law enforcement officers with a search warrant.
Yes.
The Child Enforcement Agency or Maintenance Service is there to protect children and ensure that parents are responsible for the financial welfare of children. The CEA also aims to reduce family violence, for example.
Well if you prove that she has threatened her then they will do something about it as its all over the television about bullying.
Law enforcement at least until a hearing is obtained. Then, the judge.