I think she accurately assessed the risk over the holiday weekend, because you obviously lived to write this post and deliberately chose to not notify her you were not planning to attend your session. Actions have consequences: if you write a long letter over a holiday weekend threatening self harm and then don't show up for a planned therapy session, I believe the T would be negligent to not take appropriate actions to check on your welfare. And it sounds like, although you do not include this information, that she may have sought to secure your whereabouts AFTER the cops didn't find you. And unless she started recounting your history of difficulties or relaying other confidential information to the others, I think a breach of confidentiality (which doesn't apply in a situation where you might harm yourself or others) of the sort you're kind of explaining is reasonable under the circumstances. Doesn't mean you can't tell her what you think about it. I do think it might be helpful to you to see this in a more complex way than you see it right now. But the larger issue is that you don't think this is therapeutic for you anymore, so why don't you just end it?