I still think that is her left hand, bent at the wrist.
The wrist where it is bent reflects light and shows up lighter. If you look at the bottom of it, you can see the bumps that look like where the fingers or knuckles are.
What she is holding looks too long and straight to be a cell phone. More like a remote or sometype of meter.
BTW, since the evidence appears to already be bagged, that can explain why they don't have gloves on. They probably removed them after they bagged the evidence they were after. If that was the bear, I think she would still have the glove on.