These memories were assembled over time by FFC:
When FFC opens curtains/blinds around 7:30 AM, she sees the gunmetal grey car with the white car parked abnormally close behind it in an abnormal part of Ellendale Crescent. By her own admission, she thinks it’s odd, but forgets about it. No one else sees these cars.
About 60 - 90 minutes later, she is watching the kids ride their bikes on Benaroon Road. She watches someone in a dark grey/green car drive pass by to neighbours, turn in driveway, back out, and then drive back down passed FFC. She notices the guy was in his late 50s with an “old-timey beer belly.” WT’s sister sees car as well. FFC notices and makes eye contact with the man. Now, at this point, this exchange has to be compounded by the earlier sighting of the two cars parked with multiple abnormal elements.
I understand she recalls these details LATER. However, in the moment, she must be a little bit concerned. Not frightened, but CONCERNED. Yet, she thinks not to keep a more watchful eye on her children, even when WT’s roaring begins to trail later, and loses him from her eyesight. Then, FFC mistakenly *thinks* MFC is driving up due to WT’s fading roars (and surmising he's chasing after MFC’s car) or KNOWS MFC is driving up Benaroon Road (which would negate MFC actually having a view to strange people luring his foster son to strangely parked cars on Ellendale Crescent).
Also, did the biological parents even know where foster Nana’s home was? They didn’t even know foster family was taking trip until the state informed them. It *seems* ruling out the biological family would have taken very little time considering the facts, regardless of their history …