One of the problems also, there was a long time between her being reported missing and the AA being issued.
I just checked my text convo with my sister.
The date and times are here. This was a few minutes after it came across the TV and I called my sister to see if she got it. Then she sent me a text back.
That's a lot of time between disappearing and ET's sister said the cops didn't want to issue an alert for a while because they thought she left on her own.
Also Decatur is being focused on because that is the last confirmed location tied to them and that was Monday afternoon, over 24 hours before the AA was issued.