>>102288505
No, she physically cannot move her arms any closer to her torso. You can check the original video.
Meanwhile, Doki you can see regularly moving her arms close to her body in ways that even clip through her torso, showing that if anything, the model is bigger than she is in some areas. Her constant motion was very diciplined. She was no gymnast, and definitely no Pomu, but you can tell from her movements that she definitely was not out of shape. The girl took this concert extremely seriously.