OMG: Someone help! My Ex Girlfriend Wants To Kill Herself Because I Left Her

Before I get any crap, I didn’t leave her because she was depressed or anything. I tried everything that I could to get her the help that she so desperately needed while we were together because frequently
she would talk about how she would rather just be dead. She has a very interesting and rough past. I have tried to call non emergency for a wellness check the other night. She is almost mocking that she can get out of that.
She took some of my advice but nothing would really stick and she would do just enough to keep me at bay and think everything was content. She needed to be with me 100% of the time. It got to the point where she really didn’t have anyone else besides me. This caused a lot of pressure on me. She even flipped out when I wouldn’t answer my phone because I was hanging out with a friend, in which she called everyone of my friends trying to find where I was. She went to my house and banged on the door and my window trying to find out. Then was waiting on my porch as I got home pretty late at night.
Bottom line, I decided I could not take it anymore. I wasn’t going to be able to help her anymore than I already did and I couldn’t take this unhealthy relationship anymore. I ended the relationship a couple of days ago, but insisted that I was still her friend just nothing romantic. Now she just keeps tweeting and posting on social media all innuendos of how she is going to kill herself. I am at a loss. I truly do not know what to do.
I called the non emergency number to do a wellness check the other night, but now she is just posting all about how no one knows where she is this time. At this point, I don’t know if I should be worried about my safety either. I’m more worried that she might actually harm herself though. Any advice for me?
My Ex Girlfriend is posting innuendos about committing suicide on social media. I’m afraid she might do it. I don’t know what to do, any advice?