She understood there was a problem
It seems as though he thought it would be a dull enough excuse to divert her attention, but he was oblivious of the fact that she had visited the shed a week before and found it to be spotlessly clean and organized. As a direct consequence of his explanation, additional inquiries were posed. Why would he intentionally deceive her?
It stayed on her mind
Abby’s mother came at the house not long after, and shortly after that, both of Abby’s parents put her to bed. Despite the fact that Abby did not bring up the shed in front of her parents in order to show respect for them, she could not stop thinking about it all night. She was able to see the shed from her room, so she went to the window to look outside.