User blog:ChishioKunrin/"Why was Neo afraid of Raven?" An explanation.

A lot of people assume that Neo fled because she knows Raven, but it has been said by the crew that she actually doesn't know Raven and fled because she could sense how powerful Raven is. This actually makes sense, and I'm going to explain why.

The whole scene happens rather quickly, but you can get a better grasp of what happened if you watch it at 0.25 speed or look at it frame-by-frame.

When Raven dropped in from a portal and charged, Neo was surprised by the sudden intrusion and moved away from her. She barely managed to dodge Raven's first attack, with the blade at the very most grazing her right arm. As Neo slid to a stop, Raven spun around clockwise and slashed a second time, with the sword coming from Neo's right. It looks like Neo may have moved to block it, but she wasn't fast enough, and Raven actually cut her across her abdomin. This strike knocked Neo backward, and that's when Neo's eyes turned white and she looked scared.