So, apparently there was no talking her way out of this situation because Genis was already moving into attack mode judging by the flicker of energy around him, before igniting the sky. Jen cursed repeatedly under her breath, she didn't want to fight this guy, there was no way she was going to win. And further, what was going on?! Who was this person? And what did they want with her. Jen spun on her axis to try and get away. At least he was moving slowly, enough for her to prepare herself for the assault since there'd be no stopping him once he was fully charged up.
In mid air, she threw up several shields, her own powers flickering around her. Unlike that of an actual Green Lanterns, her light was more like fire, dancing and shimmering around her form. Genis' blast hit Jen's defenses, took the brunt of the blast and then quickly crumbled.
The blast flung her back in the air, some good distance away. Jen cursed again, she needed to get with the program and fortify her will power and shake off the inkling of fear in the back of her mind... Because this was happening whether she liked it or not, so she might as well actually do something about it and fight back.
After she asked, "Who are you and what do you want?" of course.