Observation. This whole doors theme seems to run through the whole narrative. I. The alleged attack has the boys locking the br door then her locking the bathroom door, finally running out the front door. 2. Later at Safeway she goes in one door and her mother enters the store via a different door. 3. Finally the thing about her house doors. Why all this focus on doors I wonder? Her reactions are out of proportion to the events she describes which makes me think she was abused regularly during childhood and transferring the panic to this made up scenario which is more acceptable to her.
A good possibility.