Sorry am jumping ahead but Jack is so reductive! The cosplay at various real life conditions is so belittling to those going through it. It would be more responsible to signpost the squig to resources/services that could help treat PTSD not her over simplified approach.
PTSD (as with many other conditions) can be so over whelming and debilitating all at once. Getting people to text before they knock on a door isn’t going to cure it - it often requires more complex treatment, one that can involve a few different things depending on the complexity of it. A squig reading that could be so put off seeking actual help if they read that and can’t take such an approach so think they’ve already failed when they haven’t.
The cosplaying is what makes Jack so dangerous.