This is JMO.
From this article, I think it shows that she was trying to use Lucas and JH for her own financial and personal benefit.
It appears to me she was trying to get some custody back so that would lower her custody agreement $$$ with her ex. If she could have gotten partial custody back then the $$$ agreement to him would be lowered because she would have the kids a portion of the time. This shows this.
"In July, Glass filed an affidavit in Butler County District Court arguing she should have joint custody of her two biological sons, ages 6 and 7.
As part of her argument, Glass said she has taken care of step-son Lucas A. Hernandez for the past two and half years; clothes, bathes, feeds, plays, teaches, takes to doctors appointments, etc."
It could explain how she may have blown up on Lucas after the LL visit. If she felt she was going to get in trouble for leaving a child alone and that would lessen or eliminate any chance she could ever have at getting custody back then he would not be useful to her anymore. He would become disposable to her. And she may have gone off on a rage against him.
I have a feeling she uses kids and other people as a leverage in her life and that is her main motivation in having kids. Which is very sad. She strikes me as a user. Unless someone is useful to her then she has no need for them. Ive known people like that before. Always called them "users".
If any of this speculation is true then how can it help us find Lucas now though. Gosh we need to find him.
I cant shake the feeling that someone she "used" in her life may have given her help this time.
http://www.kansas.com/news/local/crime/article201898009.html