Those poor kids - bad enough to have lost their mother, but to be left with a callous, unfeeling SOB of a so-called fatherv and a stepmother from hell :-(
I don't expect they'll be seeing much of dad and stepmom going forward. It won't the family court but a few hours to award custody to the grandmother. Too often kids with hopelessly irresponsible parents have nothing better among the rest of their relatives, but these little boys obviously have a caring and competent grandma who was keeping an eye on things and looking for an opportunity to get authorities involved.
The grandmother, not sure which side , was on TV last night, she was not approving at all of the parents actions.
These "parents" need to lose custody , at least until they attend parenting class, and do community service at least, if not some time cleaning inmates teeth in a lockup.