"Well, the simple answer is that really strong painkillers make me sicker than your crew have been all afternoon," she told him, looking uncomfortable at the mere thought of it. "The more complicated reason, though..."

Rogue worried her lower lip with her teeth for a moment, debating how to explain a situation that most people couldn't even begin to comprehend. "I think I've mentioned before that there are over two hundred individual personalities in my mind. Most of them... aren't very pleasant. They were people we were fighting, people I had to interrogate, even people who just... attacked me personally." She tried to take a deep breath and ended up coughing for her trouble. When she'd composed herself again, she continued, "Murderers, rapists, sociopaths. I've got the whole catalog up here, and when I take really strong drugs like that? Found out the hard way that my mental shields don't hold up as well, and the whole gang can come out to play."

She shook her head in resigned frustration. "The last time it happened, it took two weeks of really intense therapy with Charles before I could even be in the same room as someone else. Because of what they made me see, and feel. So I just deal with the pain as best I can, because it's better than the alternative."