I work in the mental health profession and Cherry is right, sending messages to a suicidal person that they are loved and needed is a good thing. She is not doing this with the ulterior motive of saving her M but rather reminding a potentially fragile person that he means something.
Her WH has done some pretty despicable things but that doesn't mean Cherry should just walk away when he is nearing death. (potentially I know)
Cherry, you cannot control your WH's actions but you are being compassionate. I am glad you feel calm and collected, remember he drowning and the only thing you can do is throw a life preserver to him. Remain out of the water and do not swim to him, he will drag you down. The messages are important but do not start to think his actions are a reflection of something you did or didn't do, kay?
M 10yrs T 13yrs BD #1Oct 2015-PA between WAH and COW BD #2 April 2016-WH resumed PA, she broke it off Jan 2 2017 WH says he wants divorce April '17-Letting go 2018 D busted DD8, DS6, DS3