User blog comment:B214/Talk About What You Want! 2/@comment-74.77.52.225-20140718223120/@comment-1359322-20140718230152

In this situation, i would probably be saying that Ravel lost her rights to receive the Evil Pieces. Ravel clearly isn't too young cause Rias received hers earlier than Ravel. Currently the only known Pure Devils that are EP are Ravel, Kuisha and Grayfia and all three of them don't have a peerage. So it's safe to conclude that if a Pure-blooded Devil becomes another Devil's EP, they automatically lose their right to obtain the EP.