There's a history in this country of fatherly protection of daughters. In the past the father of the woman was asked for his blessing for a couple to get married. The mother was also consulted by the father for the mother's wise opinion as well. If the father said no, then there was no marriage, unless the couple decided to be rebellious, and this was usually (despite romantic novels and comedies) a very bad idea. As mature adults who had seen more of the world, the woman's parents were wiser than she most of the time and not being in love with the suitor himself, the father had less clouded judgement and could more fairly assess the prospect.
This is one layer of protection that has almost completely been stripped away and it leaves young women who fall in love vulnerable to charismatic monsters.
Another layer of protection that has been stripped away is that whites in general and women in particular are taught from young childhood that it's "EVIL" and "RACIST" and other buzzwords to resist relationships with those of other races. In the past most young white women simply would have been raised to know better than to go with a black man. Now they fear being called racist if they resist a black man's advances.
This is a very twisted and sick world that leaves women vulnerable to predators like this.