Step 1. File for divorce. Step 2. Block her on everything.

she needs mental health help. harried or not it could be seen as neglect to not get her help. Yes people will call adult protective services.

I believe the proper course of action, especially since she's sent you evidence of herself threatening self-harm is to "take it seriously" and acknowledge that you have neither the training or appropriate relationship with the situation to effectively help her through this mental health crisis - Therefore, you refer it to the appropriate emergency responders, who should be able to help her and make sure she's not a threat to herself or others. Probably even take her in to the psych ward for a proper assessment, that sort of thing. [The point being that she will learn rather quickly not to make such threats as an attempt at manipulation/extortion, as she will find herself some combination of stuck in the psych ward for a few days each time, or facing the ire of cops for wasting everyone's time and committing a crime, if she admits to being fully competent/not actually seriously threatening self-harm]

I believe the proper course of action, especially since she's sent you evidence of herself threatening self-harm is to "take it seriously" and acknowledge that you have neither the training or appropriate relationship with the situation to effectively help her through this mental health crisis - Therefore, you refer it to the appropriate emergency responders, who should be able to help her and make sure she's not a threat to herself or others. Probably even take her in to the psych ward for a proper assessment, that sort of thing. [The point being that she will learn rather quickly not to make such threats as an attempt at manipulation/extortion, as she will find herself some combination of stuck in the psych ward for a few days each time, or facing the ire of cops for wasting everyone's time and committing a crime, if she admits to being fully competent/not actually seriously threatening self-harm]