Her sin killed her, U can't help in any way to arrange for sin without being purnished for the sin.
The young girl which satan used carried her sin which will follow and kill her slowly for the rest of her life just humans before her has done. Her young life is already tainted and marked for death due to that sin and other sins to follow. one sin beggetts another. AND THE WAGES OF SIN IS DEATH, PERIOD.
The man of the house was also tested and failed. The only way he could've redeemed himself was to marry the girl since his wife is dead but of course the girl will not marry him. devil just used her momemtarily to get to the wife and the husband. Thereby turning around to God and demand he execute HIS written law. God being a just God must carry out his purnishment as He has written -THE WAGES OF SIN IS DEATH.
Satan knows he's no longer going back to God. The door is shot for him so he manipulate as many people as possible to disobey God, THEN he turns around and demand God to carry out his purnishment as he has written.
So how many souls was lost there? the wife for sure, the husband and the child BUT some people was originally chosen by God before the beginning of the world- about (not sure) 20% of every thousand. No one knows his selection criteria and no one knows exactly who is chosen. Could be from hawker around the corner to the priest at the alter. No one knows. He reveals it to these chosen folks at different times of their lives, some when still in the womb and some evn shortly before they die. These people will reside with him eternally after they die or if they are still alife when Christ comes, regardless of how they died or when they died; whether they died in the womb or of old age. Major characteristics of those whom he has revealed himself to as chosen is that THEY ARE CONSTANTLY SEEKING TO DO THE WILL OF GOD.