In another classic case of people being too sensitive about what they look like in pictures, the girl in the beige dress toward the front of this picture thinks that she's done something strange with her hand. She has sort-of made a fist, but if she hadn't mentioned it, we wouldn't have noticed. We don't think anyone else would either. Nevertheless, she wants Fridman to make it look like she's holding something, and therefore the fist would make sense.
By saying he should 'add something' in her hand, she was leaving herself open for literally anything. We're guessing that Fridman was thinking about his next skiing holiday when he was editing this picture, because she's got a great climbing stick there now. She's also dressed appropriately for the hobby. She should probably have just asked him to add a purse.