Easy.

You can't know a person is going to flip their lid until they do. Until then you treat them like everyone else, as though they are reasonably civil and stable.

In this case, she's "dating" off of dating apps. Dating apps that are designed to make matchrs based on common interests and basic level appearance attraction. Nothing more.

So it might match me with Hitler, for example, based on the fact that we are both interested in art, painting in particular. Assuming I had no context with who Hitler was, to me he's just a guy an algorithm said I would like fare well with based on common interests.

It wouldn't be until I got to know him better and been treatee to one of his historic rants that I would have had a clue about his behavioral patterns and THEN been able to say, "you know, this isn't gonna work out. I'm just not into genocidal rages as you."

They were in this phase of getting to know each other when the guy flipped his lid.

Hinestly, what more do you want from her? She's already done all she can do in this situation. It does no good to report these guys, the aops are making too much money. The police don't care, because you "were looking to date him." She ended it as soon as she made the assessment and then she blocked him.

The point stands. She's not attracting these guys. They're being brought TO her by an algorithm that DOES NOT consider women's safety or sketchy skeevy behavior as factor to cull.

Her mistake here, if there was one, would be either in putting too much faith in these dating apps or still convincing herself that wading through all that human sludge is worth it in order to date.

It's not. Best thing that could happen would be for women to leave these apps en masse and stop dating altogether. That's already happening, but as long as money is being made, real change will not happen until women walk away.