I would agree with this completely if we, the general public and the media, had all the same information as LE and we had the clout to tell family members what to do. But - we don't!
Family members have no obligation to tell the media or bloggers anything or to explain their actions. If LE approves, they can and do make statements that will not affect the case and will put their loved one in a positive light. If they say more than they should, LE will clamp down on them.
Maybe TN told LE right away about asking a family member to check on the children. Just because we didn't hear it for 8 days doesn't mean that LE didn't hear it for 8 days. Misty has demonstrated over and over that she lies and omits information, so it is no surprise that she might not mention someone stopping by.
We don't know for sure that GGMS was the family member that TN asked to check the children. Maybe the family member TN asked suggested that she and GGMS ride together because she knew she had their clean laundry.
Maybe Misty told TN that she and Ron stayed up all night talking, hoping to paint the situation in a better light, and TN just repeated the story.
Maybe Misty and Ron were trying to reconcile, but that doesn't mean that Misty wasn't exhausted and so balking at babysitting. Maybe she felt that someone else in the family could help out for once.
Maybe (and most likely, IMO) afte the drug bust, LE warned TN to stop making public statements because she could put their strategy (for finding Haleigh) at risk or do more harm to her son in the drug case.
Maybe family members just have misinformation, or forget things, or say stupid things and then try and patch it up later.
The point is that we can select certain things family members say and put them together and find something suspicious in them. But, we only know a small portion of the facts and much of what we think are facts are probably untrue. I don't know the answers to these questions. Maybe they really are trying to spin reality. But I don't think we can possibly know yet. I hope, like everyone else, that we know soon. JMO