I think some of you guys are overestimating CPS. Their main concerns are as follows:
1. Are the children being beaten or sexually abused? In this case, no.
2. Are the children being fed daily or underweight? In this case, the two boys are fed daily and don't seem to be severely underweight.
3. Is the home filled with trash, animal feces, mold, or used syringes? In this case, no.
4. Are the children reasonably clean? Do they own adequate clothing and shoes for their environment? In this case, Yes.
That's it. CPS worker snaps her folder shut and leaves. Keep in mind, they're going to give Robyn a few more breaks regarding lack of attention/mild neglect regarding the two boys, considering that she has a severely disabled, high maintenance child. They're also not going to complain too much about Robyn's poor treatment of Luna, because we all know any treatment of Luna is fruitless and will result in the same outcome in the long run. Robyn would get in more trouble for smothering Luna with a pillow than she will for the combination of useless pseudoscience treatments and neglect that Robyn is using to "treat" Luna now.
Hopefully Robyn will give up on homeschooling, and Atlas' public school will look into his speech, hearing, and vision. That's more their purview anyway, discovering developmental problems in otherwise healthy children and treating them. Maybe Atlas is just camera-shy and clams up because Mama has warned him against making too much noise and messing up her CONSTANT videos, so we only hear him talk when he's distracted from the fact that Robyn is making a video. Or maybe something more significant is wrong with him, we don't know. I think there's still a chance that he's a perfectly normal child that's stuck in an awful situation.