I thought about that afterwards, and it might not be too terrible a workload since we can only clearly see her eyes in a few shots. On the other hand, it might be better to leave it as just that brief moment so that people don’t think ‘Oh well Rey is just evil forever now’, and a brief moment of power could be enough to both rattle Kylo and allow Rey to win without realizing she tapped so deeply into the Dark Side.
I dunno, what does everyone think?