I think you have the timeline a little bit wrong. This article may explain a little better: https://www.google.com/url?sa=t&sou...9Ik2BYeLH4Xe34WD4&cf=1&cshid=1568264871198 But to summarize from my reading of it, she watched the grandkids on Wednesday, August 7th as normal. That evening, she dropped her car off at a mechanic and a family member brought her home. This was the last official sighting of Sandra. The next day, Thursday, was not a day she was supposed to have the kids. Her daughter, therefore, didn't check in as there was no reason to. At some point (could even have been later in the day or early evening), the mechanic calls the daughter since her phone number is the one that has been left as a point of contact. The daughter then tries to call her mother to explain what kind of work the mechanic has planned to do on the car, and she gets no answer. This is the moment that immediately feels odd to the daughter. She says in another article, "she (Sandra) is never not home." She phones her mother's sister, who lives in an adjacent town, but her aunt has nothing to add about where her mom might be. As to why she doesn't dash over immediately to check on her mom, whio knows but I don't think it's that strange that she doesn't. She does have 3 kids under the age of five occupying her attention and her mom, while private and a homebody, does live independently, with no reported health problems, and at age 54 can hardly be considered elderly or anything. The next morning (Friday August 9th) is a day when Sandra is scheduled to watch the grandkids. This is when the daughter arrives early in the morning and finds the lights still on, the dog unfed, the back door unlocked, etc. So the 9th is the day she is reported missing.