Ha ha, no; I think what it means is that under Mao's influence, she chooses that for Lelouch as recompense for the crime of indirectly murdering her Father. That's what I think it actually means. These summaries are always written rather strangely, they're a bit ... scatty. But she might still die anyway. Who knows. I wouldn't put it past Lelouch to interpret 'seperation' as 'kill her now'...XD