How to talk about suicidal ideation or intent?

I opened up honestly about having suicidal thoughts to my therapist. I had no prior history of self-harm nor suicidality. We were always on good terms. This is what happened next:

1. Therapist called EMS and I was sent to the ER. I could walk and talk perfectly fine, but was strapped to a stretcher and moved around.
2. ER let me go because they assessed I was fine and not in crisis. I was charged $4000 (ambulance + ER visit).
3. Next day I met therapist at her office, and she disapproved of ER discharging me. She immediately began dialing the police.
4. I cried and asked 'why are you doing that?' and walked out of her office as she was on the phone. She followed me out, blocked me at the elevator door, and said the police will have to take me involuntarily since I left.
5. I was scared but waited for the police to arrive. They transported me directly to a mental hospital, where I was forced to stay several days.
6. I was charged $40,000 for all transport + in-patient care. After this, the hospital referred me to outpatient care, but I did not have the money to attend it.
7. Access to therapy ended abruptly: therapist said she cannot talk to me anymore, because she does not see clients long term.
8. Due to my sudden (?) disappearance, people in my life (family, friends, employer) found out about the hospital stay, and now they think I have some serious mental issues.

I do not bring this up to anyone. Following this, I felt extremely hurt, sad, traumatized - and frankly, suicidal. The social, financial, and emotional repercussions were irrepairable.

I am now terrified of bringing up any real thoughts of suicide to a therapist. But I feel like I'll end up dead one of these days. Is it possible to talk about SI in therapy without coming out destroyed - as before?