oh...& i looked at the title of the threat..she did not ruin your school life..YOU did. sounds like she made it clear she did not want the friendship..but YOUR actions caused you to be asked to leave school.

if she did not want to be friends that is her choice. she has that right. you do not have the right to pester & harass & make it unsafe...that caused your school life to end.

you need to accept responsibility for YOUR actions...& your behavior.