I don't see that she did anything wrong. She took you at your word (i.e. you saying 'yes' to intent). After all, how was she to know you replied without listening.

I see how this has caused you a heck of a lot of hassle to say the least, but i don't see how she, or any other therapist/pdoc, could have done otherwise. It is their duty of care to take action when, not only is a patient in crisis but admits to having a plan and thinking of taking action (intent).

It would have been an act of careless negligence to ignore this. They are bound to take action if a client reports 'intent'.