when I first saw that comment, I assumed it meant that he (CD) and BD went together to report Hailey missing. I guess I thought BD contacted him to see if he knew where Hailey was, and when he didn't and no one else did, they went to the police together.
JMO
Often communication between contentious parents goes something like this:
AA: mom wants to know if you have seen hailey
BB: no, she hasn't been here at all today
AA: mom just said that she told SA she was coming here then to MB's
BB: nope, know nothing about that
AA: mom says MB says she didn't show up there either
BB: she never told ME she was going there
AA: ok, mom said she's leaving work and if Hailey hasn't shown up by the time she's home, she's going to file a missing person report. She said you need to call LE to tell them about her not showing up here or MB's.
BB: Uh huh (turns and rolls eyes where DD can't see)
Note in this example (EXAMPLE/HYPOTHETICAL only) that the two parents actually NEVER talk directly with each other, only THROUGH their son. It is sooooo common in antagonistic relationships.
So why the "uh huh" and not following through? I don't know what Clint's situation is or his situation with BD. Lots of parents do not want to have their kids stuck in the middle of an argument; it is a major reason why parents finally separate if they fought alot. After hearing of BD and Hailey's general life style, I have to think this incident just didn't seem like a major huge thing in the first hour or so of discovering Hailey 'out of place'. Heck, it seems she LIVED a good part of her previous year 'out of place'. Clint may well have thought BD was being 'weird'. Then again, on the other hand, DD may have recounted the "deer in headlights" and a resulting deep concern for Hailey to his dad, who may actually have been the one whose hackles were raised first.
So many good questions: why did BD not call SA, who she 'believed' to be at work same town, and why did she not have SIL take her to get her OWN car if she thought this was BIG enough to need to go to the police? If she did at that time believe SA to be completely innocent of anything to do with Hailey's disappearance, I think the answer might be that it would REQUIRE SA to come to her side by necessity, bringing her car with him. If she believed(knew) SA to be guilty, maybe NOT having the car in her possession when she reported to LE was.....important?