Board Thread:General Discussion/@comment-4010415-20141028040445/@comment-3146930-20141107225531

Raven is clearly more powerful than Neo, meaning that staying behind would be a huge risk. Raven after forcing her back never makes a move to continue fight, meaning she was giving Neo the option to escape or else be killed. If Neo put up an illusion and waited for her to leave, there is always a chance that either Raven would sense it or accidently walk into it (if it is like the glass wall trick Neo used before). Then Raven would just finish her off. Staying around would be too risky and with the train about to crash, she may have hoped that would finish off Yang (as Yang was still passed out when she left). Also shortly after waking up, Yang rejoins the rest of her team so Neo would be outnumbered anyway.