Thinking further....why would you even leave your house for 2 hours if you thought your child had wandered off?? I could see looking around outside, yelling the child's name...but wouldn't you STAY THERE in the event that the child returned home?!?!?!?!?!
My gut tells me she was up to no good!
Makes me wonder if she wasn't driving around searching, but rather driving around trying to come up with a story..........
jmo