As a doctor I'm aware that this intervention has no clinically proven therapeutic effect, but the desire to do it is overwhelming.
And resist the temptation to bang their heads together.
And, as Kate and Amy's family could testify, it's heartbreaking to stand on the sidelines and watch it happen.
One way for women in such situations to be able to extradite themselves from these sorts of relationships is to address their underlying self-esteem issues through psychotherapy.
It is impossible to make them wake up and see what their partner is doing to them, for the simple reason that they already know but choose to ignore it.
While the treatment they endure at the hands of their partners would prove too much for most people, it is precisely this which is what makes them stay.