User blog comment:Rassilon of Old/Young Justice spoilers at Comic-Con 2012/@comment-119.30.38.88-20120717065307/@comment-34954086-20120718022814

And here we have the primary reason that i believe Zatanna is at least partially in the loop on the plan, although only with Nightwing.

Though i mean more that she's only on the league to get at her Father.