On the subject of triggers. I think this falls right into DBing. It is okay to be triggered. It isn't okay to let the triggering dictate your actions. This is where the detachment of action and word from our underlying feelings comes from. Feel the feels. Understand that what was done or said triggered negative emotions. But do not outwardly show it or let it determine your course of action.
In general, I would introduce the relative to the concept of emotional detachment. As R2C says, it is okay to go somewhere privately and yell, cry, scream, sob etc. But in the moment, controlling all of that is a key. Especially if someone is trying to purposely trigger us.
M(53), W(54),D(19) M-23, T-25 Bomb Drop - Dec.23, 2017 Ring and Piecing since March 2018