My T has once phoned my BF. I had him listed as a next of kin. I had taken a few more tabs than I was supposed to, and then got scared, so I texted my T. She tried to phone me, but I was in such a state and refused to answer. So she texted me back, that I have 10 mins to contact her, or she would call my bf. I didn't get back to her within 10mins, so she phoned my bf. She was really worried about me, and the effects that the tabs could have had.
She's also said that if I continue with thoughts of sui and she feels I am really at risk, she can and will involuntarily admit me to hospital. Apparently this is a very scary experience, as well as the facility being far from great - all in all, she has advised me to stay away from this option.
But it's not in a nasty way, she just knows that she only has a few options to ensure my safety, and will only get involved at these levels if she feels I'm a danger to myself or others.