Sort:  

Logan Marr did have behavioral problems, like violent tantrums, and Sally's boys are her own. She probably loved them more, and they were probably better behaved. Definitely not an excuse though. All Logan Marr really needed was love and her mom back. So sad. :( Thanks for your comment @nigtroy.

It was to be expected taken into account how she had been separated from her mom forcibly. And as you said all she really needed was some real love and her dear mommy back:(