User blog comment:B214/Volume 22 spoilers/@comment-78.8.248.219-20161004044305/@comment-30048084-20161004201929

Hey, Look at volume 10 the Bael family made Sairaorg hide the fact that he had in his possession a longinus even though the Maou (faction) had agreed on sharing their knowledge on the locations of the longinus because it was advantageous for the great king faction to secretly have a longinus at their disposal.

The reason her identity is hidden is because of something similar not because she is a threat. Ise is a major existence in the underworld and he is a critical power in the balance of the worlds with Vali because they are the Heavenly Dragons. Politics are also in play right now with the Maou faction and Great King faction