If you are such a girl, it may be an advantage to look for a boy whose mother is already dead! The traditional hostility between mother in law and daughter in law and anticipated problems from a mother in law, have been so effectively drilled into the minds of some girls, that they feel safer if the problem is avoided right in the beginning. I don't endorse this attitude of course, but if this virus has already crept into a young girls mind, she is better off discreetly making this check and avoiding a future problem.