Board Thread:General Discussion/@comment-26185073-20160324013202/@comment-27963514-20160408134855

Penny was accidentally killed by an obviously remorseful friend. Ruby knew it wasn't Pyrrha's fault.

When Pyrrha died, Ruby had already seen Penny die, nearly got herself killed by Roman and Neo, spent most of the evening fighting and failing to save Beacon, seen several of her friends fall in battle, including her sister losing an arm. Then she ran up the side of a tower just in time to see Pyrrha get murdered rather brutally and without remorse.

It doesn't matter if she liked Pyrrha more or not. Watching Pyrrha die had more of an impact because of everything else that had happened that day.