It’s that arm pointing downward toward her groin, plus the blush is where I got the impression.
By that logic she also could have also been holding a gun she shot someone with. Or had a papercut on her hand. Or broke something in her hand. Or an empty bag of chips. Or a bouquet she received. Any number of millions things to make her cry or blush. Yet we do not tag those for a reason.
You do not see it, you do not tag it. I think it was that simple.