Board Thread:Speculation House/@comment-30912969-20170101053155/@comment-4010415-20170101053502

We don't know for certain if the Silver Eyes affect all Maidens, or if Ruby's Silver Eye flash affected Cinder specifically because Cinder used a Grimm to steal Amber's Fall Maiden powers. Judging by the scene at the end of Of Runaways and Stowaways, it seems like Cinder has something inside of her, possibly the Grimm beetle that she used to steal Amber's powers. If that's the case, then Ruby's Silver Eyes counted Cinder as partially Grimm because of the Grimm beetle inside her, and as a result, hurt her.