Oh, for God's sake! The grandmother is the one who went to court to get custody of the children. She's the one who wanted to get the children away from their criminal, drug-dealing, loser parents. And now you think that she helped them to kidnap the children away from her?
Yeah, sure. That makes a lot of sense.
And by the way, she DID report them right away. Maybe at least find out a little bit about the story, before you comment.