Jacen sat down, his mind spinning at the implication. If it was another galaxy, and he wasn't real, then was he real at all? Did he exist in his galaxy, and by coming here, was his existence negated? The sheer number of paradoxes he was suddenly confronted with left him silent for some time. Finally, he looked up at Jaina. "Alright, so what's the other bad news?"
He could deal with not being real in one universe. Maybe. It was a concern for another time. What he was really concerned about was what these demons were, and who controlled them. And survival, of course. That first of all. He had a galaxy to get back to and save. By whatever means necessary.