It all depends on whether you want to be a life coach or a saint, and I don’t know much about either except perhaps in general terms.
I know about a few other things and possibly those experiences and that knowledge might apply. For example, therapists/psychologists are trained to absorb confrontation from patients because they must attempt to establish a particular deep rapport in order to accomplish their long-term goals. I don’t believe such is the case with anyone’s online writing persona. You have the absolute right to withdraw from any conversation you believe is nonproductive, especially one that seems in some way violent.
I know that teachers are trained to deal with confrontational circumstances, especially but not exclusively those who teach younger children. But again this is for the almost exclusive benefit of the child and if and when the child goes beyond the expectations of “normal” behavior even the teacher is not expected to continue dealing with her.
Only saints are expected to be martyrs. You are allowed to draw limits and establish boundaries upon the acceptable behaviors of others within your own life. No one—no one—is allowed to dictate those terms for you.
But, of course, when you dictate them to yourself, and experiment with those boundaries (as many people do) if you chose to experiment with “sainthood” prepare for the life of martyrdom. I hear it can be somewhat uncomfortable at times. Whips and crosses and things like that. Oooey...