Hi. Yes, they shift stuff around. As Lemon-Drop says, if the crop is empty in the morning, all is well.
Might be worth checking her poop too. If there's a blockage, the poop is either tiny or just runny.
Check her crop for the three types of issue:
Impacted - as hard as a good ball and about the same size or larger
Sour - like a water balloon, just squishy and often the breath smells sweet and sour
Doughy - like Playdoh or clay, if you squeeze it, it maintains the shape you just made
All have different treatments and there's tons on here about them, but that's probably where I'd start of there actually is a problem.
Good luck!