The calming effect of the full light is a sign that something woke her up in the middle of the night, the night light probably kept her from a full panic attack, so good job!
The whole 'let's destroy the foraging box right now' thing is a mystery, definitely, but her waking up in the dead of night is something you can investigate.
Cars outside, maybe some drunk people? Hvac going off? Or like people have suggested, unwelcome & sneaky critters?
I think you should get a camera, one of those that one puts in the drive-way, make sure it also catches & triggers on sound.
If nothing registers after a week, it must've been a single-time event like drunks outside. If something registers, you have something to go on.
In any case, sounds like she doesn't appreciate being woken up in the dead of night :p
Good luck!