This is why younger women need a community with older women who have done the domestic abuse relationships and have the t shirts, who know about narcissism, male violence, abusive personalities, about learning to have boundaries and enough self esteem and life experience to say back the hell off, you do not get to treat me this way.
The atomisation of society into more narrowly defined groups, accelerated by social media, works very effectively at keeping girls and young women away from women with broader experience. While at the same time enables the JY types to find a home in these narrow groups.