Rather than report the disappearance immediately , Wesley Mathews said he did a load of laundry while figuring out what to do .
When Mathews went back outside to check on Sherin 15 minutes later , she was missing .
Rather than report the disappearance immediately , Mathews   said Mathews did a load of laundry while figuring out what to do .
When Mathews went back outside to check on Sherin 15 minutes later , she was missing .