Many Female Abusers buy their victims from the 3rd World. They use their money and their nationality as lures.
The proto-victim is exposed to the finer things in life, knowing that If he marries his ‘benefactor’ this ‘visit’ to the world of Upper Class will be permanent.
Further, she can take him to her country; to a First World Country.
The proto-victim might not love his proto-abuser at all, but, the lure of her money and power overwhelms.
She plays the benefactor, and his choice is simple. Either he marries her and moves into the Upper Class or goes back to where he was before he met her.
As in any case of domestic abuse, the proto-victim is set up so that the choice is a given.