I've linked this article here because, well, it's good. And it lists resources mine doesn't. Hope you like it. I did. And I hope, if you have the misfortune of dealing with this type of abuse, that you can use some of the advice it offers.

https://medium.com/better-humans/how-to-deal-with-coercive-suicide-threats-71a72e5cdab1?source=extreme_main_feed---------1-58--------------------d12db744_4b6e_49c6_bbf7_d601978a35c3-------