That does seem traumatic for you and I hope you are able to settle and finding some healing! But I hope you can also see how it might have been traumatic for your friend. Whether she is right or wrong, she clearly perceives that you are a danger to yourself and others. Honestly, I can understand why she went to the principal and I doubt her intentions were malicious in doing so. Sometimes we need to be called out on our issues in order for us to recognize that we have them. Even though this is a rough situation, I also see it as an opportunity to address some issues that you will be better off overcoming (like this propensity toward suicide/violence). While you may know you would never act out on those things, others around you may not. Trust is such a fragile thing; it's hard to build back up again. But I hope you will find that each individual person has a unique role in your life, and sometimes trust is the best option when it comes to healing and being a happy and healthy person. Sometimes, being exposed for something that makes us vulnerable and self conscious is a very traumatic experience - especially when it's someone we care about and trust who brings it about. I think it might help you to look at the situation objectively, try not to be defensive, and see what lesson there is to be learned.