Let me see if I have this straight: Ayla's mother went into rehab and left Ayla with her sister and mother. DHS them caught wind of that, and removed Ayla from them and placed her with her father. And then, disappeared? There has been no word that there were still regular welfare checks or even an open case. This is a bit odd to me, and way outside the norm.
Then there is the issue of the other child...where was he? id she place him with someone else?
My experience with CPS is that if a custodial parent has to make a choice as to who to leave the child with for any reason, even if CPS does investigate, they will only take the child if the situation were bad enough to warrant a removal under any circumstances. Otherwise, if the child is safe, happy, and cared for, they will often consider that placement an extension of the custodial parent's home, since the parent made that choice. If there is another bio parent in the picture telling CPS that they want their child, that can change the outcome, but CPS will not go hunt down a parent, just to take a kid out of another situation. Usually, they will remove if necessary, then try to locate a family placement, but in my experience, they don't look very hard.
So, what I'm getting from this is that when she went to rehab, she sent her kids to two different places. Ayla's placement wasn't good enough for CPS, but the baby's was. I've seen a million times where parents know that CPS is going to knock on their door any time, so they pick the friend with the most money and the cleanest house, and they sign over guardianship. technically, CPS has no recourse. The child is taken care of, while still in the custody of the parent, but not in their care. So, yes, I think there did have to be something wrong with the aunt and grandmother's care.
The only other option is that DHS spoke to her after she entered rehab, and said, We don't want to take this to court, and start that cycle, but we don't like the arrangement, we would prefer if she was with her father. That is the only way I can see both parts of this story being true. And it doesn't explain what happened in regars to the baby.