If you have a camera with video capability and you can catch her in the act, that might be useful to the vet, as well. Hope you get some answers!
"We are--each of us--dying; it's how we live in the meantime that makes the difference."
"It's not what you gather, but what you scatter that tells what kind of life you have lived!"
"Be kinder than necessary, for everyone you meet is fighting some kind of battle."