He should grab her breasts to force her to lean backward which will make his cock rub her G spot and her cervix better. She can then work her clitoris or better, ask her husband to do it, this is what I like to do with my wife, it let me increase her pleasure ( I like also to give her an open mouth kiss when the BBC tells me that he is shooting his sperm in her uterus or shoot my own load on her tongue, she tells me that feeling the sperm flowing in her body from both sides gives her an incredible orgasm that she cannot describe, she says that it help her understand what it means to be owned !!!