Topic: Meeting Evil , WARNING: Spoiler

So , did the wife hire the killer and why does the husband still want to stay with her ?
I say that she did ,because how did the killer know the husbands name ,as well as his wife's name ? I think that the husband still wants to stay with his wife because love is not always a rational thing, secondly he isn't 100% sure the killer's "story" is true and finally he does not want to break up his family which includes two children as well .