Elisabeth's shoulders slumped out of sheer frustration that he clearly couldn't 'hear' her. She pointed to him and then the saber, arcing it through the air after wards and pointing to herself. [Think you can show me how to use it? I hadn't the heart to bother Vader, that night was meant for other things.]
Course, she had been practicing, using it much like her katana, but that didn't meant their weren't tricks out there that these people would know of. A moment too late she realized he could misread her and think she wanted to par...or worse.