You are mixing apples with oranges. First, you are confusing driving around aimlessly for 90 minutes with having an aimless day. This was by no means an aimless day. Second, you are confusing having an aimless day and getting together with a friend on such a day, with aimlessly driving around at the same time that her friend disappears from work--she was either aimlessly driving around to comfort the baby or she was meeting with her friend. Her story is only that she was aimlessly driving around--not that she was having an aimless day and met up with her friend. Third, She did not aimlessly drive around after dropping her child off at school. She left her child at a science fair to (according to her gym manager) run and get the baby some medicine--she then went to several stores and neglected to go back to the science fair--(and pick up the science project which was the whole reason she had the truck)--and THEN she aimlessly drove around.
BBM - You bring up a good point. From what the witness said in the interview, it did seem that TH gave the impression she was planning to go back to the science fair. That's why she mentioned that it would still be going on for awhile.
However, maybe this happened at the 1st Fred Meyer (which would make sense, since it would be over close to the time she was at the 2nd FM), and since they didn't have the medicine and she had to go to another store, she ran out of time to go back.
In other words, maybe she did intend to go back to the school and pick up the science project at the end of the science fair, but that plan got messed up by the store trips. That would explain why she checked about it later (emailed the teacher).
But there was nothing in TH's email or in what her mother (or anyone else) said to the media that would indicate she had intended to return.
I could almost think that, if she *did* take Kyron, then the trip to the store was part of the plan, to give the time frame when she wasn't there and he could go missing (while she was handing him off to someone else). But then I don't know how the second FM would fit that theory, since it would have thrown the whole thing off. I mean, she could have handed off Kyron, gone to FM and gotten her receipt (as she did), and come back to the school, where she would have discovered him missing. That would have given her a super-tight timeline, since the only time she would have been missing was accounted for by a store receipt.
ETA: Unless she and her accomplice got confused on which FM they were supposed to meet at! THAT would have thrown the whole thing off!
All pure speculation.