And Mahlon and Chilion died also both of them; and the woman was left of her two sons and her husband. And Mahlon and Chilion died - The Targum adds, And because they transgressed the decree of the word of the Lord, and joined affinity with strange people, therefore their days were cut off. It is very likely that there is more here than conjecture.
Related Commentaries of Ruth 1:5
Ruth 1:5
5 And Mahlon and Chilion died also both of them; and the woman was left of her two sons and her husband.